With their small size and feature, these screwdriver bit allow for easy in narrow space alloy steel, these screwdriver bit are wear resistant and long lasting Perfect for tackling various tasks with ease Super force, strong adsorption, force to enhancer the screw is not easy to fall and improve work efficiency Upgraded your tool box with this set of screwdriver bit Say goodbye to worn out bit and enjoy efficient and The 25mm bit are designed with a center hole, while the 50mm bit have a full star shape, Manufacturer: NEWFT