The ToolPRO 1/4" to 3/8" adaptor will easily allow your 1/4" ratchet wrench to couple with 3/8" drive sockets. Manufactured from chrome vanadium steel and sporting an easy to clean high polish chrome finish this adaptor is protected from corrosion and abrasion damage. This adaptor also features a spring ball detent for secure socket retention to save your sockets from disappearing into the unknown depths of your engine bay. Not for use with impact wrenches or high torque applications.