This product is a pair of T7 Torx (star) screwdriver bits with a 1/4" hex shank and a 50 mm overall length, intended for precision screwdriving tasks where a small hexalobular drive is required. The primary use case is accurate engagement of T7 fasteners in electronics, small appliance repair, telecommunications equipment and other precision assembly work where a compact, reliable bit is needed.

The bits are manufactured from S2 shock‑resistant tool steel and have been heat treated to provide wear resistance and retention of tip geometry under repeated use. The surface is given a black phosphate finish to enhance corrosion resistance and reduce glare when working in confined or brightly lit spaces. The drive is a T7 Torx (hexalobular star) tip conforming to ISO 10664-style Torx dimensions, while the shank conforms to DIN 3126 / ISO 1173 for 1/4" (6.35 mm) hex screwdriver bits (type C 6.3), ensuring compatibility with standard 1/4" bit holders, quick‑change chucks and power tool adaptors. Thread type: not applicable for this class of product.

Typical applications for these bits include electronics repair (smartphones, laptops, cameras), precision mechanical assembly, instrumentation and small electrical enclosures where T7 fasteners are specified. The small T7 size is commonly found in precision fastenings where a tamper‑resistant profile and accurate torque control are required.

Key benefits of these bits are the S2 material’s toughness under shock loads compared with standard carbon steels, the black phosphate finish providing basic corrosion protection for workshop environments, and the adherence to recognised bit shank and tip standards for broad compatibility with existing hand and low‑torque power tool systems. The 50 mm length gives a good balance between reach and control for working in shallow recesses.

Duchy Fasteners stocks Torx bits across a wide range of sizes and pack quantities; this item is supplied as a 2‑pack 50 mm bit set and we also offer alternative lengths and larger multi‑packs to suit workshop and site requirements.