Neiko 20753A Keyless Chuck Conversion Tool | 1/4-Inch Shank AN IDEAL ACCESSORY: Turns any  cordless power screwdriver into a drill or grinder to quickly switch tasks and keep the job moving EASY ON AND OFF: Keyless chuck converter to go from driving to drilling in seconds KEYLESS DESIGN: Chuck securely holds round-shank drill bits ONE-HANDED DRILLING: Gives you the freedom of one-handed drilling and is ideal if youre working in tight spaces UNIVERSAL: Universal driver 1/4-inch hex shank snaps easily into the power screwdriver