Jacobs Industrial Keyless Chuck - Thread Mounted (1/2" x 20) 16mm Capacity - 3111 tb51ii
	Tightened and released by hand They permit more rapid tooling changes to increase machining productivity A self-tightening feature produces significantly higher gripping force to resist tool shank slippage Precision manufactured and tested to the most exacting quality standards Extremely high reliability and durability under the most demanding machining conditions For exacting production line and toolroom use Capacity - 3mm - 16mm Mount Thread Size - 1/2" x 20 Easily closed by hand The greater the load it grips, the tighter it becomes. Does not slip Hardened and ground and accurately made For use in drilling, boring, counter-boring and milling operations requiring heavy penetration