Draper Expert MM/AF Combined Socket Set, 1/4" Sq. Dr. (75 Piece)

The Draper Expert B75AMN/SG 75-Piece Combined MM/AF Socket Set is the most comprehensively specified 1/4" square drive toolkit in the Draper Expert range — and one of the most complete dual-standard sets available at any price point. Combining metric and imperial sockets in both standard and deep profiles, an unrivalled drive accessory package, and an exceptionally broad screwdriver bit selection spanning five drive profiles, the B75AMN/SG is built for professional technicians, master mechanics, and serious workshop engineers who demand complete fastening capability from a single, precision-engineered kit.

The socket foundation is formidable. 12 standard metric sockets (4–13mm, including 4.5mm and 5.5mm), 10 metric deep sockets (4–13mm), 9 imperial AF sockets (3/16"–1/2"), and 6 imperial deep sockets (3/16"–1/2") give a combined count of 37 sockets covering the full range of metric and imperial fastener sizes encountered across modern European vehicles, American classics, motorcycles, marine engines, agricultural machinery, and precision instruments. The dual-standard, dual-depth coverage means there is virtually no small-fastener application this set cannot handle without reaching for a supplementary kit.

Every socket is precision-manufactured from chrome vanadium steel, hardened, tempered, and finished to Draper's Expert-grade micro satin chrome — a refined, professional finish that offers superior corrosion resistance alongside a distinctive appearance. The knurled ring on each socket provides a positive, tactile grip surface for confident one-handed positioning, even in oily, greasy, or gloved conditions. The six-point geometry ensures maximum contact across fastener flats, reducing rounding risk on the compact, easily damaged fixings that 1/4" drive work regularly involves.

The drive accessory package is where the B75AMN/SG truly distinguishes itself from every other 1/4" drive set on the market. Eight separate drive tools provide an unmatched combination of reach, angle, and torque control:

• 72-tooth reversible ratchet with soft-grip handle and quick-release button — 5° swing arc for efficient operation in the tightest spaces
• Spinner handle for rapid, fatigue-free fastener running once broken free
• Three wobble extension bars at 50mm, 100mm, and 150mm — covering shallow to deep access with built-in off-axis flexibility
• Flexible extension bar at 150mm — for maximum angular reach into heavily obstructed or deeply recessed locations
• Flexible handle — for applying torque at extreme angles where no other drive tool can reach
• Sliding T-bar — for high-leverage fastener breakaway or rapid free-running using both hands
• Universal joint — for indirect-angle access in confined spaces
• 1/4" Sq. Dr. to 1/4" hex bit adaptor — integrating the full bit range directly with the ratchet and extension bars

The combination of a wobble extension bar and a separate flexible extension bar at the same 150mm length is a particularly thoughtful inclusion. The wobble bar provides moderate off-axis flexibility ideal for engine bay and general automotive work, while the fully flexible bar allows far greater angular deviation — making it the tool of choice for accessing fasteners deep inside bodywork cavities, behind dashboards, or within transmission tunnels where even a wobble extension cannot find a viable approach angle.

The 28-piece screwdriver bit selection is the broadest in the Draper 1/4" range, covering five drive profiles with exceptional depth in each:

4 plain slot bits: 3, 4, 5.5, 6.5mm — four sizes covering the full range of slotted fasteners from miniature electrical components through to larger panel and appliance fixings.

3 cross slot (Phillips) bits: No.1, No.2, No.3 — standard coverage for Phillips fasteners across automotive and domestic applications.

3 Pozidriv (PZ-Type) bits: No.1, No.2, No.3 — essential for European vehicles and domestic appliances where Pozidriv is the standard fitment. PZ and Phillips are not interchangeable — using the correct profile prevents cam-out and fastener damage.

9 TX-STAR® Torx bits: T7, T8, T9, T10, T15, T20, T25, T27, T30 — the most comprehensive Torx range in the Draper 1/4" lineup. The inclusion of T7, T8, and T9 — the miniature Torx sizes used on electronics, instrument clusters, computer hardware, and small appliance assemblies — alongside the automotive standard T10–T30 range makes this set uniquely capable across both precision engineering and vehicle work. The T27 covers Ford, Jaguar, and Land Rover applications where this size is standard fitment on wheel arch liners, underbody panels, and brake components.

6 metric hex bits: 3, 4, 5, 6, 7, 8mm — full coverage for metric Allen fasteners across the most common engineering sizes.

3 imperial hex bits: 1/8", 3/16", 1/4" — complementing the imperial socket range with imperial Allen key capability for American vehicles, classic motorcycles, and imported machinery.

The inclusion of imperial hex bits alongside imperial sockets is a consistency that sets the B75AMN/SG apart from sets that combine imperial sockets with metric-only bit selections — ensuring true dual-standard capability across every fastener type in the kit.

The complete 75-piece set is housed in a tough blow-moulded plastic storage case with a soft-grip handle, designed to accommodate every component in dedicated recesses and provide secure, organised storage for transport and workshop use. As part of Draper's Expert range, the B75AMN/SG is manufactured and tested in general accordance with DIN3122 and ISO3315 specifications — verified quality for the demands of daily professional use.

Key Features

• 75-piece combined metric and imperial socket set on a 1/4" square drive
• 12 standard metric sockets: 4, 4.5, 5, 5.5, 6, 7, 8, 9, 10, 11, 12, 13mm
• 10 metric deep sockets: 4, 5, 5.5, 6, 7, 8, 9, 10, 11, 13mm
• 9 imperial AF sockets: 3/16"–1/2"
• 6 imperial deep sockets: 3/16", 1/4", 5/16", 3/8", 7/16", 1/2"
• Chrome vanadium steel — hardened, tempered, and micro satin chrome finish
• Knurled ring on every socket for secure one-handed grip
• Six-point socket geometry minimises fastener rounding
• 72-tooth reversible ratchet with soft-grip handle and quick-release button — 5° swing arc
• Spinner handle for rapid fastener running
• Three wobble extension bars: 50mm, 100mm, 150mm
• Flexible extension bar: 150mm — for maximum angular reach
• Flexible handle for extreme-angle torque application
• Sliding T-bar for high-leverage breakaway and free-spinning
• Universal joint for off-axis fastener access
• 1/4" Sq. Dr. to 1/4" hex bit adaptor
• 28 screwdriver bits — five drive profiles
• 4 plain slot bits: 3, 4, 5.5, 6.5mm
• 3 cross slot (Phillips) bits: No.1, No.2, No.3
• 3 Pozidriv (PZ-Type) bits: No.1, No.2, No.3
• 9 TX-STAR® Torx bits: T7, T8, T9, T10, T15, T20, T25, T27, T30 — including miniature T7, T8, T9
• 6 metric hex bits: 3, 4, 5, 6, 7, 8mm
• 3 imperial hex bits: 1/8", 3/16", 1/4"
• Tough plastic storage case with soft-grip handle
• Compliant with DIN3122 and ISO3315 specifications

What sockets are included in the Draper Expert B75AMN/SG? The B75AMN/SG includes 37 sockets in total: 12 standard metric (4–13mm), 10 metric deep (4–13mm), 9 imperial AF (3/16"–1/2"), and 6 imperial deep (3/16"–1/2") — all on a 1/4" square drive with chrome vanadium steel construction and knurled grip rings.

What is the difference between the wobble extension bar and the flexible extension bar in the B75AMN/SG? Both are 150mm in length, but they offer very different degrees of angular movement. The wobble extension bar allows moderate off-axis deviation of approximately 15° — ideal for most engine bay and automotive access requirements. The flexible extension bar contains an articulated or coiled section that allows a much greater range of angular movement, making it the tool of choice for accessing fasteners deep inside bodywork cavities, behind dashboards, and within transmission tunnels where a wobble bar's limited flexibility isn't enough. Having both in the same set provides a complete solution for any access challenge.

Why does the B75AMN/SG include T7, T8, and T9 Torx bits when many sets start at T10? The miniature T7, T8, and T9 Torx sizes are standard fasteners on computer hardware, consumer electronics, small household appliances, precision instruments, and certain vehicle-specific components including instrument clusters and infotainment modules. While T10–T40 covers most automotive body and mechanical work, the sub-T10 sizes are essential for electronics-focused tasks. Their inclusion makes the B75AMN/SG genuinely capable across both precision engineering and automotive applications — a breadth of coverage absent from most comparable sets.

What is the advantage of including imperial hex bits as well as imperial sockets? Many combined MM/AF socket sets include imperial sockets but only metric hex bits — leaving a gap in coverage for Allen-head fasteners on American vehicles, classic motorcycles, and imported machinery that use imperial hex sizing. The B75AMN/SG's three imperial hex bits (1/8", 3/16", 1/4") ensure true dual-standard capability extends to Allen fasteners as well as sockets, making it a genuinely complete MM/AF toolkit rather than a metric set with imperial sockets bolted on.

What is the difference between Pozidriv and Phillips bits, and why does the B75AMN/SG include both? Phillips (cross slot) and Pozidriv fasteners appear almost identical but have different internal geometries. Pozidriv has additional radial grooves between the cross slots that create a tighter fit and virtually eliminate cam-out. Using a Phillips bit on a Pozidriv fastener — or vice versa — risks slipping and damaging the fastener recess. Pozidriv screws are standard on European vehicles including VW Group, BMW, and Mercedes-Benz models, as well as in domestic appliances and construction fixings. Including both PZ and Phillips profiles in the B75AMN/SG ensures the correct driver is always to hand.

Is the Draper Expert B75AMN/SG suitable for professional use? Yes — the B75AMN/SG is part of Draper's Expert range, designed and built for professional and trade environments. Chrome vanadium steel construction with micro satin chrome finish, DIN3122 and ISO3315 compliance, and the depth and breadth of its socket and accessory coverage make it a credible primary toolkit for vehicle technicians, master mechanics, and workshop engineers who work across both metric and imperial fastener standards.

What applications is the B75AMN/SG particularly well suited to? The set is exceptionally well suited to professional automotive work across modern and classic vehicles, motorcycle maintenance, marine engine servicing, agricultural and industrial machinery, electronics repair requiring sub-T10 Torx bits, classic car restoration requiring imperial sockets and hex bits, and any application mixing metric and imperial fastener standards. The combination of standard and deep sockets in both measurement systems, alongside the most comprehensive bit selection in the Draper 1/4" range, makes it a single-purchase solution for virtually any small-fastener application.