• K8901M 3/4" impact sockets 21 mm, 22 mm, 24 mm, 27 mm, 30 mm, 32 mm, 36 mm, 41 mm • To be used with machines • For maximum safety use clamping springs • Phosphate finish • High-performance alloy steel • Dynamic-Drive™ Profile to protect nuts, screws and tools from unnecessary wear and damage • In sheet metal box • Drive standard: DIN 3121-H 20, ISO 1174 • Standards: DIN 3129, ISO 2725