A set of 82 pieces with 1/4" and 1/2" drive is designed for assembling and maintaining screw connections. It includes two ratchets, hex sockets in the range of 4 to 32 mm, spark plug sockets of 16 and 21 mm, extensions, universal joints, and tools for various screw profiles. Also included are nine combination spanners in the range of 8 to 22 mm. The chrome-plated tools made of chrome-vanadium steel are stored in a plastic case measuring 380 x 285 x 85 mm.