JT2 Short, 1/32 to 3/8″ Capacity, Tapered Mount Drill Chuck;Keyed, 45mm Sleeve Diam, 56mm Open Length | 73547358

73547358 73547358 1/32-3/8″2JT 3JAW KEY Ball bearings are designed to reduce friction in the tightening mechanism and provide a better grip on the drill. They are used for heavy-duty machining and require a key for tightening or loosening. Keyed chucks are engineered to either loosen or tighten the hold on a tool by using a key. Keyed chucks offer the advantage of applying additional torque on the bit when slippage is a concern during heavy-duty applications. Tapered mount drill chucks have an internal Jacobs Taper (JT) that is press-fit onto a corresponding JT arbor (shank) or spindle.