Draper Expert Combined MM/AF Socket Set, 3/8" Sq. Dr., Blue (41 Piece)

The Draper Expert D41AMN/B 41-Piece Combined MM/AF Socket Set in blue is a comprehensively specified dual-standard toolkit built for professional mechanics, classic vehicle enthusiasts, and workshop engineers who regularly work across both metric and imperial fastener systems. Identical in content to its green-cased counterpart, the D41AMN/B is colour-coded in blue for clear drive-size identification on a busy tool trolley — an essential organisational advantage in any professional environment.

The set covers 17 standard metric sockets (6–22mm), 4 metric deep sockets (8, 10, 12, 13mm), 9 imperial AF sockets (1/4"–3/4"), and 3 spark plug sockets (10, 12, 14mm) — all operating on a single 3/8" square drive. This dual-standard coverage makes it equally at home on a modern European vehicle, an American classic, imported machinery, or any application where metric and imperial fasteners appear side by side.

Every socket is precision-formed from chrome vanadium steel, hardened, tempered, and polished to a high-chrome finish for a combination of professional appearance and lasting corrosion resistance. The 12-point socket geometry allows the socket to engage a fastener from a greater number of rotational positions — a practical advantage when working in confined spaces where precise tool alignment isn't always achievable. The knurled grip ring on each socket provides a secure, tactile surface for confident one-handed positioning, even with oily or gloved hands.

The drive accessory package is where the D41AMN/B truly earns its Expert designation. Six accessories give you complete control over torque, reach, and angle:

• 72-tooth reversible ratchet with quick-release button — a fine 5° swing arc for efficient work in tight spaces
• Three wobble extension bars at 75mm, 150mm, and 250mm — covering shallow to deep access with off-axis flexibility
• Sliding T-bar — for maximum leverage on stubborn fasteners or rapid free-running
• Flexible handle — for torque application at wide angles in highly restricted spaces
• Spinner handle — for fast, efficient running of fasteners once broken free
• Universal joint — for indirect-angle access where no other solution fits

This is a level of drive tool coverage rarely found outside professional-grade sets, and it means the D41AMN/B can handle virtually any fastening scenario without requiring supplementary accessories.

The complete 41-piece set is housed in a tough blow-moulded plastic storage case with a soft-grip handle and blue colour coding — allowing instant visual differentiation from 1/4" and 1/2" drive sets, and from other 3/8" sets in the Draper Expert range. In a shared workshop or multi-bay environment, colour-coded cases significantly reduce the time lost searching for the right tool.

Manufactured and tested in general accordance with DIN3122 and ISO3315 specifications, the D41AMN/B delivers the quality assurance expected of the Draper Expert range — tools built to withstand the demands of daily professional use.

Key Features

• 41-piece combined metric and imperial (AF) socket set on a 3/8" square drive
• 17 standard metric sockets: 6–22mm
• 4 metric deep sockets: 8, 10, 12, 13mm
• 9 imperial AF sockets: 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4"
• 3 spark plug sockets: 10mm, 12mm, 14mm
• 12-point socket geometry for multi-position fastener engagement in confined spaces
• Chrome vanadium steel — hardened, tempered, and polished chrome finish
• Knurled grip ring on every socket for secure, one-handed placement
• 72-tooth reversible ratchet with quick-release button — 5° swing arc
• Three wobble extension bars: 75mm, 150mm, 250mm
• Sliding T-bar, flexible handle, spinner handle, and universal joint included
• Blue colour-coded storage case for easy drive-size identification
• Tough plastic storage case with soft-grip handle
• Compliant with DIN3122 and ISO3315 specifications

What is the difference between the Draper D41AMN/B and the D41AMN/B/GREEN? Both sets are identical in content — 41 pieces with the same sockets and accessories on a 3/8" square drive. The key difference is the storage case colour and grip design: the D41AMN/B comes in a blue case and features a knurled ring on each socket, while the D41AMN/B/GREEN comes in a green case and features a cross-knurl and three-groove grip design. The blue case is ideal for workshops already using a colour-coding system that assigns blue to 3/8" drive tools.

What sockets are included in the Draper Expert D41AMN/B? The set includes 17 metric sockets (6–22mm), 4 metric deep sockets (8, 10, 12, 13mm), 9 imperial AF sockets (1/4"–3/4"), and 3 spark plug sockets (10, 12, 14mm), along with 8 drive accessories — all on a 3/8" square drive.

Why choose a combined MM/AF socket set over a metric-only set? A combined MM/AF set is essential if you work on vehicles or machinery that use both fastener standards. American vehicles, older British cars, marine engines, and agricultural or industrial equipment often mix metric and imperial fixings. Having both standards within a single set eliminates the need to switch between kits mid-job, saving time and reducing the risk of using a close-but-incorrect size that can damage a fastener.

What is the advantage of a 12-point socket over a 6-point socket? A 12-point socket can engage a fastener from twice as many rotational positions as a 6-point socket, which makes it easier to seat in tight spaces where ratchet movement is limited. For most general fastening work this is a practical benefit. However, for very high-torque applications or heavily corroded fasteners, a 6-point socket distributes load more evenly across the fastener flats, reducing the risk of rounding.

What is the purpose of the spinner handle in this socket set? The spinner handle is a short, free-rotating handle that attaches to the drive and allows you to rapidly spin a fastener in or out using your fingers once it has been broken free or started. It is significantly faster than ratcheting for the running portion of a fastener and reduces hand fatigue on repetitive tasks.

What does the flexible handle do that a standard ratchet cannot? The flexible handle has a pivoting head that allows the drive to be angled significantly off-axis — well beyond what a wobble extension bar provides. This makes it the tool of choice for fasteners in deeply recessed or heavily obstructed locations where no straight or near-straight approach is available. Combined with an extension bar, it can reach fixings that would otherwise require panel removal or disassembly to access.

Is colour coding on socket set cases useful in a professional workshop? Yes — colour coding is a widely adopted system in professional workshops and tool trolleys. Assigning a specific colour to each drive size (for example, yellow for 1/4", blue for 3/8", red for 1/2") means technicians can identify and return the correct set at a glance, reducing time wasted searching for tools and minimising the risk of using incorrect drive accessories.