Drop-forged, six-point, WallDrive impact sockets. Hardened and tempered for strength and with phosphate finish for greater corrosion resistance. Chrome Vanadium steel used on 3/8" and 1/2"Sq drive. Chrome Molybdenum steel used on 3/4" and 1"Sq drive.Model No:IS1210Drive:1/2"SqSize:10mmDepth:StandardModel No:IS1210DDrive:1/2"SqSize:10mmDepth:DeepModel No:IS1211Drive:1/2"SqSize:11mmDepth:StandardModel No:IS1211DDrive:1/2"SqSize:11mmDepth:DeepModel No:IS1212Drive:1/2"SqSize:12mmDepth:StandardModel No:IS1212DDrive:1/2"SqSize:12mmDepth:DeepModel No:IS1213Drive:1/2"SqSize:13mmDepth:StandardModel No:IS1213DDrive:1/2"SqSize:13mmDepth:DeepModel No:IS1214Drive:1/2"SqSize:14mmDepth:StandardModel No:IS1214DDrive:1/2"SqSize:14mmDepth:DeepModel No:IS1215Drive:1/2"SqSize:15mmDepth:StandardModel No:IS1215DDrive:1/2"SqSize:15mmDepth:DeepModel No:IS1216Drive:1/2"SqSize:16mmDepth:StandardModel No:IS1216DDrive:1/2"SqSize:16mmDepth:DeepModel No:IS1217Drive:1/2"SqSize:17mmDepth:StandardModel No:IS1217DDrive