With the SPMR49B 49-piece Ratcheting Screwdriver Bit Set from MAC Tools, fine tooth ratcheting has never been smoother. With this tool's comfortable non-slip, bi-material handle and professional strength S-2 steel bits, work can be done on applications including Slotted, Phillips, Tamperproof Star, Pozidriv, Hex and Square. This set is also has an anti-slip design for Slotted, Phillips and Pozidriv bits, two bit adapters and offers quick change chuck.