Check the listing for details. WOODRIVER Wide Capacity Deluxe Doweling Jig. Condition: New. Listed at 81.98 USD. WOODRIVER Wide Capacity Deluxe Doweling Jig, 164251, Self-centering hardened drill guide block with steel clamping screw, Hole center marked on jig to align directly with location mark on the workpiece, 6" wide Capacity with aluminum frame holds work securely, Two permanent drill hole sizes 7/16" and 1/2" and two threaded drill holes, Use the Automatic self-centering action of this WoodRiver® Wide Capacity Deluxe Doweling Jig to assure accurate center drilling every time. Steel clamping screw has fine threads to increase clamping force across even narrow material. Aluminum frame holds work securely without damage to the workpiece. Drill guide block is hardened, precision drilled and marked for hole centers. Extra capacity up to 6" wide is perfect for face work on 2 x 4 and 2 x 6 stock.