Make of alloy steel, it can achieve durability and in daily use, so as to quickly switches tasks and maintain stable work Comfortable large spherical handle, nonslip design, easy to operate by hand Press to release the-up drill bit and realize quick replacement in second The quick connector can be used for charging drill, electric drill and electric tool It can be used for deck construction, wood frame, plywood floor, building crates The hexagonal head design improves handling and maneuverability, making it easier to work in tight spaces 1 / 4inch hexagonal handle: suitable for clamping electric drill chucks without quick function The clamping diameter of chucks must be greater than 6.35mm, Manufacturer: BULAIDAI