• K8906Z 3/4" deep impact sockets 1", 1-1/16", 1-1/8", 1-1/4", 1-5/16", 1-3/8", 1-7/16", 1-1/2" • 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