Draper Expert Metric Socket Set, 1/4" Sq. Dr., Blue (25 Piece)

The Draper Expert B25MN/SG 25-Piece Metric Socket Set is a compact, access-focused 1/4" square drive toolkit that combines professional Expert-range build quality with a carefully balanced socket and accessory selection — all presented in a blue colour-coded storage case that makes it instantly recognisable on a busy tool trolley or shared workshop bench. Identical in content to the green-cased B25MN/SG/GREEN, the B25MN/SG is the natural choice for workshops and technicians whose colour-coding convention assigns blue to 1/4" drive tools — ensuring the right set is always located at a glance without any possibility of confusion with other drive sizes.

The socket selection delivers 12 standard six-point metric sockets spanning 4–13mm — including the commonly overlooked 4.5mm and 5.5mm intermediate sizes that are essential for the small fasteners found throughout modern vehicle electronics, sensor brackets, instrument panels, ECU housings, and bodywork trim fixings. Complementing these are 7 deep sockets in 5, 6, 7, 8, 10, 11, and 13mm, providing recessed-fastener reach across the sizes most frequently encountered in automotive and engineering deep-access work. The combination of standard and deep profiles within a compact 25-piece set makes the B25MN/SG a genuinely capable professional toolkit rather than a basic entry-level kit.

Every socket is manufactured from chrome vanadium steel, hardened, tempered, and finished to Draper's Expert-grade micro satin chrome — the low-glare, refined surface treatment that distinguishes the Expert range from the standard product line. The micro satin finish reduces reflective eye fatigue under workshop lighting, fingerprints less readily than high-polish alternatives, and provides excellent long-term corrosion resistance in daily professional use. The knurled ring on each socket ensures positive, tactile grip for confident one-handed placement in oily, greasy, or gloved conditions, while the six-point geometry maximises contact across fastener flats — minimising rounding risk on the compact, easily damaged fixings that characterise 1/4" drive work.

The drive accessory package delivers strong reach and torque flexibility across five accessories:

• 72-tooth reversible ratchet with soft-grip handle and quick-release button — a fine 5° swing arc for efficient fastener engagement in even the most restricted spaces
• Spinner handle for rapid, low-fatigue fastener running once broken free
• Two wobble extension bars at 50mm and 150mm — covering shallow and deep access with off-axis flexibility, the 150mm bar providing greater reach than the 100mm found in many comparable compact sets
• Sliding T-bar — for high-leverage breakaway on stubborn fixings or rapid free-spinning without a ratchet
• Universal joint — for indirect-angle fastener access in confined or heavily obstructed spaces

The choice of a 150mm wobble extension bar as the longer of the two extensions is a deliberate specification decision that reflects the set's professional orientation. In automotive interior, trim, and electrical work — the primary applications for a 1/4" drive set — the difference between a 100mm and 150mm extension frequently determines whether a deeply recessed fastener can be reached without partial disassembly. The 150mm bar accesses fixings inside door cavities, behind bulkheads, and within instrument panels that a shorter bar cannot comfortably reach, making it a more practically useful choice for professional use. The wobble feature built into both bars provides off-axis flexibility for fasteners that can't be approached directly, without sacrificing the rigidity and torque feel of a straight extension bar for moderate angular deviations.

The complete 25-piece set is housed in a tough blow-moulded plastic storage case in the B25MN/SG's signature blue colourway, with dedicated recesses for every socket and accessory keeping the set complete and organised. As part of Draper's Expert range, the B25MN/SG is manufactured and tested in general accordance with DIN3122 and ISO3315 specifications — quality verified to the standards demanded by daily professional use.

Key Features (bullet list for on-page use):

• 25-piece professional metric socket set on a 1/4" square drive
• 12 standard six-point sockets: 4, 4.5, 5, 5.5, 6, 7, 8, 9, 10, 11, 12, 13mm — including 4.5mm and 5.5mm
• 7 deep sockets: 5, 6, 7, 8, 10, 11, 13mm — for recessed fasteners and long studs
• 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
• Two wobble extension bars: 50mm and 150mm — 150mm bar for deep access beyond most compact sets
• Sliding T-bar for high-leverage breakaway and rapid free-spinning
• Universal joint for off-axis fastener access
• Blue colour-coded storage case for instant drive-size identification
• Tough plastic storage case with dedicated component locations
• Compliant with DIN3122 and ISO3315 specifications

FAQ Section (supports featured snippets):

What is the difference between the Draper Expert B25MN/SG and the B25MN/SG/GREEN? Both sets are identical in every respect — the same 12 standard sockets, 7 deep sockets, wobble extension bars, sliding T-bar, spinner handle, ratchet, universal joint, chrome vanadium steel construction, and micro satin chrome finish. The sole difference is the storage case colour: the B25MN/SG comes in a blue case and the B25MN/SG/GREEN in a green case. The choice between them is purely one of colour-coding preference or workshop convention — blue is the more widely used colour for 1/4" drive identification in standard workshop colour-coding systems.

What sockets are included in the Draper Expert B25MN/SG? The B25MN/SG includes 12 standard six-point metric sockets (4–13mm, including 4.5mm and 5.5mm) and 7 deep metric sockets (5, 6, 7, 8, 10, 11, 13mm) — 19 sockets in total, all on a 1/4" square drive with chrome vanadium construction, micro satin chrome finish, and knurled grip rings.

Why is a blue storage case useful in a professional workshop? Colour-coded tool storage is a widely adopted system in professional automotive and engineering workshops, where multiple socket sets of different drive sizes are used side by side. Assigning a specific colour to each drive size — commonly yellow for 1/4", blue for 3/8", red for 1/2", or variations on this — allows technicians to identify and retrieve the correct set instantly without reading labels or opening cases. The B25MN/SG's blue case integrates cleanly into any workshop using this convention for 1/4" drive tools, or stands out as a clear visual marker in any shared or multi-set environment.

What is the advantage of the 150mm wobble extension bar over a 100mm bar? The 150mm extension bar provides an additional 50mm of reach beyond the 100mm bars found in many comparable compact sets — a difference that is frequently critical when accessing deeply recessed fasteners inside door cavities, behind instrument panels, and within bulkhead assemblies. At 1/4" drive, where the primary applications often involve trim, interior, and electrical work, the ability to reach deeper without stacking extensions is a meaningful practical advantage. The wobble feature adds off-axis flexibility for fasteners that can't be approached directly, without compromising the torque feel of a straight connection.

What does the sliding T-bar do that a ratchet cannot? The sliding T-bar connects to the 1/4" square drive and provides a crossbar handle that slides along its length. Positioned centrally over the fastener it applies straight-line torque; moved to one side it creates a lever arm for breaking out stubborn or corroded fixings with greater mechanical advantage than a ratchet handle allows. It also enables rapid free-spinning of fasteners using both hands — significantly faster than ratcheting for the running portion of a bolt, and particularly useful when removing multiple fasteners in sequence. For a compact 25-piece set, its inclusion alongside a ratchet, spinner, and universal joint reflects the Expert range's professional specification philosophy.

Is the B25MN/SG suitable as a secondary set alongside a larger 3/8" or 1/2" drive toolkit? Yes — this is one of the most practical roles for the B25MN/SG. Its compact 25-piece size and blue colour-coded case make it an ideal companion set for technicians who carry a larger primary toolkit and need a dedicated, organised 1/4" drive set for trim, interior, electronics, and precision work. The deep socket selection and 150mm extension bar ensure it handles the recessed fastener access that 1/4" drive work frequently demands, while the Expert-range build quality matches the standard expected in professional environments.

What standards does the Draper Expert B25MN/SG meet? The B25MN/SG is manufactured and tested in general accordance with DIN3122 and ISO3315 specifications, which govern dimensional accuracy and mechanical performance for socket sets and drive accessories. These are the same standards applied across the Draper Expert range, ensuring consistent quality and tool interoperability throughout the lineup.