The Proxxon deep socket set, 1/4" + 1/2", comes in a compact plastic case with a snap closure and a sturdy insert. Featuring a 1/4" (6.3 mm) square drive (for 1/4" ratchet; torque values here under 25 Nm): hex inserts for sizes 4, 5, 5.5, 6, 7, 8, 9, 10, 11, and 12 mm. With a 1/2" (12.5 mm) square drive (for 1/2" ratchet; torque values here over 25 Nm): sizes 13, 14, 15, 16, 17, 18, 19, 21, 22, and 24 mm. All parts are matte chrome plated. Hardness values and maximum torque exceed DIN/ISO requirements. The dimensional accuracy is within the permitted tolerances. A table for thread sizes from M 1.6 to M 24 with torque values is permanently fixed on the lid.