Metabo 636620000 1/16-Inch - 1/2-Inch futuro plus double sleeve reversible keyless chuck. The Metabo 1/16-Inch - 1/2-Inch Futuro Plus Double Sleeve Reversible Keyless Chuck Item No. 636620000 is for corded and cordless drills. This new mechanism provides higher gripped power and longer life. This chuck has a large protective steel cap that protects chuck against dirt and damage. The Metabo 636620000 Internal Thread Weight is 10.5 lbs.