Stanley Proto J6006RK 3/8-Inch Drive Ratchet Head Repair Kit - Torque Wrench 1/4-inch to 1-inch ratchet wheels made from alloy steel for uncompromising strength and durability Field repair your torque wrench ratchet head easily with the corresponding repair kit Rachet Head Repair Kits - Torque Wrench 3/8-inch Drive size Use with: J6006C, J6006CX, J6006CXCERT, J6006MC, J6006NMC, J6012C, J6066C, J6066CX, J6066CXCERT