GS ??536-504? 19BXH JT4 Mount 3/64-3/4 Super Heavy Duty Ball Bearing Drill Chuck
GS Ball Bearing Chucks are specially designed for HEAVY DUTY drilling applications on production drilling machines, jig borers, milling machines, lathes and radials. The ideal choice for those jobs that require close tolerance drilling. The ball thrust bearing reduces friction in the chuck's closing mechanism, so the operator can apply more gripping power on the twist drill shank.
