It is easy to convert your wrench / driver / rotary hammer to normal drill The unique thrust bearing is easy to convert the torque applied by the handle into greater clamping force metal materials, and practical With heat-treatment, the product has good toughness and higher structural strength The locking plate is installed in the back sleeve, which can loosening and loosening in the work more effectively and make the clamp more when holding the tool, Manufacturer: LiRRvb