A Chucks & Chuck Keys is a specialized clamp-type used to hold a radial symmetry object, especially a cylinder. Then grab the chuck, use the pliers. You can use a spare glove, piece of leather or something similar to wrap around the chuck first if you’re concerned about the jaws marking the drill.
In one of the Chucks & Chuck Keys, position the drill bit. Also, when holding the piece, use a glove to prevent you from cutting your hand. The jacket rotates around the body of the Chuck Keys, or shell as it is also called.
Drills are held in geared drill chucks with straight shanks that have three adjustable jaws to lock on the drill. Smaller size drills are made with straight shanks due to the extra expense when tapered to provide these sizes. Geared drill chucks come in different sizes, the most common being the 3/8 or 1/2-inch chuck.