This is a 1/4" square drive 40-piece socket set designed for general workshop and precision maintenance use, providing a compact range of sockets, bits and drive accessories for light-to-medium torque tasks. The set’s primary use case is fastener assembly and adjustment where accessibility and a fine ratchet action are required — for example in precision engineering, instrumentation and light automotive or bicycle maintenance.

Each socket is forged from chrome vanadium (Cr-V) steel and heat-treated for strength and wear resistance, with a chrome-plated, satin/mirror finish to help prevent corrosion and ease cleaning. The sockets are 6-point (hex) form to fit hex head fasteners securely and reduce rounding of corners. The set connects via a 1/4" (6.35 mm) square drive ratchet and accessories; no screw thread is used for the drive connection, which relies on the standard square tang/latch interface. Drive accessories in the set include a fine-tooth ratchet mechanism for small swing angle operation (suitable for confined spaces), extensions and a universal joint, together with a selection of hex/Allen bit sockets and screwdriver-style bits for grub screws and recessed fasteners.

Manufacture and form conform to recognised hand-tool standards (DIN/ISO/BS) for 1/4" square drive socket tools and interchangeable accessories, ensuring compatibility with other industry-standard 1/4" drives and bit holders. Thread type is not applicable to the sockets themselves; bit sockets accept standard ISO/DIN bit profiles such as hex/Allen and Phillips where fitted.

Typical applications include precision engineering workshops, maintenance bays, electrical and instrumentation servicing, motorsport and cycle workshops, and general light engineering where a compact, versatile drive set is preferred. Key benefits are the Cor‑V steel strength and heat treatment for reliable torque transmission, chrome finish for corrosion resistance in workshop environments, and compatibility with widely used 1/4" drive tooling.

Duchy Fasteners stocks this Draper Tools Group D 1/4" Sq Drive 40pc set (DR16464) as a comprehensive kit; we also offer individual sockets, bit packs and alternative-sized sets if you need a different size range or smaller packs for specific applications.