The DeWalt DW2518 Rapid Load Holder Set allows for quick and easy accessory changes without rechucking. The DW2518 works with all 3/8 and 1/2 drills. The Rapid Load Holder has a hex shank to prevent slipping and has a pressure-activated ball-groove system for better retention so bits wont slip out. The DW2518 is easy and comfortable to use. It can be operated with one hand and has rubber grips for a better hold. The DW2518 comes with the most popular screwdriver bits, drivers, and drill bits for all of your needs.