The SIDCHROME unique Detection Box holds sockets, tools and accessories firmly in place and allows for instant identification of missing product, even when the box is closed. It reduces the risk of forgetting a socket, tool or accessory in a machine or an engine after servicing and reduces the risk of accidents. - Available in 3/8 drive and 1/2 drive versions, and each set includes a premium ratchet: choose from a maintenance free compact head ratchet or dual function rotator ratchet. - Sidchrome sockets feature the Torque - Plus Fastening System; sockets grip fasteners tighter to enable greater torque while reducing the risk of fastener rounding - Sidchrome’s unique drive designs allow greater contact with the flats of fasteners, providing greater torque to make tightening easier - Maintenance free compact head ratchet is lighter than conventional lever rachets and features a high precision, ultra-resistant sealed head for longer life; a recessed reverse lever helps to avoid accidental reversal - Sockets and accessories come supplied in a heavy-duty, metal clasp-and-hinge Detection Box for secure, safe storage and easy portability; the innovative case design features easy identification windows to allow for instant detection of product (present or missing), even when the box is closed - The innovative Detection Box reduces the risk of forgetting a tool or accessory in a machine or an engine after servicing, and reduces the risk of accidents - Includes17 x Metric Sockets8mm10mm11mm12mm13mm14mm15mm16mm17mm18mm19mm21mm22mm24mm27mm30mm32mm1 x Maintenance Free Compact Head Ratchet2 x Extensions125mm250mm1 x Universal Joint