1Adopting chrome vanadium steel material, the socket adapter is of high harness, strong strength and long durability. 2The spring loaded ball bearing makes the adapter holds the socket firmly. 31/4inch hexagonal shank is suitable for all quick change chuck and standard drill chuck. 4A great tool to change the hexagonal size into square size, convenient for the installation of socket. 5 It can be installed on the pneumatic screwdriver, electric screwdriver, electric drills and more electric tools.
