The VIM Tools 33-pc Power Drive Master Impact Bit Set, No. PDMS100, covers the most commonly used drives for Phillips, Torx, Torx Plus, and hex drivers. It features quick-change power drivers that come in 3" and 6" overall lengths, as well as a 1/4" power driver for bits that fit 1/4" square driver to 1/4" quick-connect bits. The set is covered by a lifetime warranty.