Change your jaws in 30 seconds or less using Easy Wood Tools patented technology. No fumbling with screws, no special sequence, no time wasted. No kidding! Changing our jaws is effortless: Simply use the supplied ball end hex key, depress the keeper latch, slide any size Easy Jaws or Big Easy Jaws into your Easy Chuck (sold separately), listen for the snap, and the jaw is locked into position and ready to use in 30 seconds or less. No screws to lose, rounded corners increase safety. Our Easy Jaws are the only ones you'll ever need.