The Makita E03573 11-piece IMPACT PREMIER Screw Bit Set with Ultra-Mag Torsion Bit Holder is designed for maximum durability and performance in demanding applications, particularly with high-torque impact drivers. This genuine Makita set includes a variety of commonly used screw bits, featuring precision-machined tips for a superior full-contact fit and reduced cam-out. The IMPACT PREMIER bits are constructed from S2 modified steel and undergo a proprietary heat treatment process for extended life. The Ultra-Mag Torsion Bit Holder provides 10x stronger magnetism for secure fastening and features a two-piece design engineered to absorb torque peaks and prevent bit breakage. The set is ideal for professional tradespeople requiring reliable and long-lasting fastening solutions.