Cementex IS38-12M-IMPACT3/8 in. x 12mm 6 Point Square Drive Impact Wall SocketDrive Size: 3/8 in. Socket Size: 12mm 1000V rated for use with insulated tools Number of Points: 6 Socket Type: Impact Wall Socket Constructed with extra-thick sidewalls to withstand shock and vibration of impacts Beaks or cracks are prevented by chrome molybdenum steel Designed for use with pneumatic tools such as electric or pneumatic wrenches Complies with IEC 60900 and ASTM F1505 standards Helps users reach requirements of OSHA Safety Related Work Practices, NFPA 70E Standards and CSA-Z462 Tested to 10000VAC and rated for 1000VAC/1500VDC when working on live parts Marked with international safety symbol for 1000V