• WHITE USA- 1/2 JACOBS CHUCK AND KEY WITH 3/4" WELDON ADAPTER. FITS ANY MAG DRILL THAT ACCEPTS 3/4" WELDON ADAPTER OR ANY DRILL PRESS THAT ACCEPTS 3/4" WELDON ADAPTER. Its 1/2"-20 mount with 1/4"-20 left hand cap screw to prevent chuck reversal. Great tool for any tradesman. Condition is New. Part# is SHJAW. Ships with USPS. Ships same business day if ordered before noon Mon.-Fri.