Size: 1/4"*1/4"*50mm(Length)--1/4 "shank can be converted into 6.35 mm square 3/8"*1/4"*50mm(Length)--1/4 "shank can be converted into 9.53 mm square 1/2"*1/4"*52mm(Length)--1/4 "shank can be converted into 12.7 mm square Material: Chrome vanadium steel CR-V. Package List: Socket Adapter Hex Shank Set 1x Set (3pcs)

• Stainless steel locking ball ensures secure fit. sockets snap-on tightly & won't slip off.
• Applies to the screwdriver handle or electric screwdriver tools (hexagonal hole or three jaw chuck can be).
• 1/4" (6.35mm) hex shank prevents stripping during high speed drill operation.
• Driven sleeve is used, can be the original hexagonal side after installation on size into square size, which can be used for the installation of the sleeve, is a good accessories to convert.
• Super strong heat treated chrome vanadium steel for normal & impact.

Stainless steel locking ball ensures secure fit. sockets snap-on tightly & won't slip off.JCare