The 1/4" screwdriver set from PROXXON comes in a sturdy, powder-coated steel case. It includes socket wrench inserts from 4 to 13 mm. The screwdriver inserts feature a square drive for slotted screws, Phillips screws, TX screws (with a front-side hole), and hexagon screws. Additionally, 5 angled hex wrenches are provided. A table for thread sizes from M 1.6 to M 24 with tightening torque values is permanently fixed to the lid. Hardness and maximum torque values exceed DIN/ISO requirements. The dimensional accuracy is within the approved tolerances. It features torsion-resistant, indestructible molded inserts made of injection-molded polypropylene. Oil-resistant, acid-resistant, and easy to clean. With permanently legible markings for all key sizes. They are also excellent for placing in the drawers of common workshop carts.