This Craftsman #0 x 4" bi-material square screwdriver features a black oxide tip for improved durability and grip without compromising tip fitment. The screwdriver handle features 3 specialized sections, depending on the job that needs to be done. First, the speed zone offers fast rotation control for efficient operation. Second, the torque zone provides additional texture and adhesion geometry for heavy torque applications. Finally, the precision tactile zone provides rotational control for precision tasks. This screwdriver can be used for carpentry, electrical, mechanical and plumbing applications, DIY projects or machinery maintenance and upkeep. This product is backed by a limited lifetime warranty.