Chuck Keyless 13mm 1/2' X 20 Self-tightening

Tork Craft Keyless Drill Chuck — 13 mm × 1/2″ × 20 UNF (Self-Tightening) Upgrade your drill with quick, tool-free bit changes and a secure grip. This 13 mm keyless, self-tightening chuck fits spindles with a 1/2″ × 20 UNF thread and provides smooth tightening action with strong clamping force for general drilling in wood, plastics and light metals. Ultra replacement 13mm (1/2') keyless drill chuck, 20 UNF thread. Replacement drill chuck for use in most small electric and cordless drills. Self tightening chuck type. Fits most 13mm drills 1/2in x 20 UNF thread Opening capacity: 13mm D urable all metal construction Installation Info Most chucks will have a reverse threaded screw locking them in place that will have to be removed before unscrewing and replacing the chuck. Pro Tip To seat the chuck firmly on the spindle, run the drill in reverse at low speed for a second after hand-tightening. If you notice slip on tough materials, retighten at mid-stroke: stop, add a quarter-turn by hand, then continue drilling.