McMaster 7176N21 Impact Socket Extension, 1 1 2" Square Drive, 5" Overall Length 6KHA5 Number of Padlocks 2 Lockout Number of Padlocks 2 Lockout Color Silver Standards NEMA Hinged Yes Fits NEMA 30 Industrial and Airline Recreational Square Drive Size 1 1 2" Overall Length 5" Compatible Retaining Ring ID 3" Material Oil Coated Steel Color Black Drive Type Impact Socket Type Extension Sold As Individual Country of Origin Taiwan DFARS Compliance Specialty Metals COTS Exempt Export Control Classification Number (ECCN) EAR99 REACH Compliance Not Compliant RoHS Compliance Not Compliant Schedule B Number 820420 These extensions are made to withstand the high torque and force of impact tools