Wera 8740 B HF Zyklop 3/8" Drive Hexagon Socket Bit Metric 3/8" 4mm

The Wera 8740 B HF Zyklop in 4mm delivers a reliable solution for small metric hex fasteners commonly found in machinery, automotive components, and precision equipment. The 3/8" drive keeps it compatible with standard Zyklop ratchets, extensions, and adaptors for versatile use across the workshop. The holding function locks screws in place on the bit, reducing the chance of losing fixings in confined or hard-to-reach areas. Knurling machined into the lower end aids manual grip when a ratchet isn't the right tool for the job, and the Take it Easy colour-coding system means you can identify this 4mm socket instantly without any guesswork. Features and Benefits: • Holding function secures screws on the tool for safer, more controlled fastener placement • Non-impact bit socket for manual or machine tool operations • Take it Easy colour-coding for instant size identification • Knurled lower end for a confident manual grip • Chrome vanadium steel with matt chrome-plated finish Specifications: Drive Size: 3/8" Hex Size: 4mm Overall Length: 35mm Contents: 8740 B HF Zyklop bit socket with holding function, 3/8" drive, 4 x 35mm