- PROTO1/2" DRIVE 5/8" IMPACT SOCKET - HEX BIT464J74415/8Call for PriceAvailability: Special OrderPROTO1/2" DRIVE 5/16" IMPACT SOCKET - HEX BIT464J74415/16Call for PriceAvailability: Special OrderPROTO3/8" DRIVE 3/8" IMPACT SOCKET - HEX BIT464J72903-8Call for PriceAvailability: Special Order