Jig Includes Drill Bit, Stop Collar, and Stop Collar Wrench for Added Convenience!An incredibly affordable doweling jig for those who want a quick joint without the fussy layout.Rockler Doweling Jigs are transparent, you need only set the two parts together, strike a line across the face of the joint and line up the jig.Made to last with a 3/16" acrylic faces and hardened steel drill guides.1/4" guide has holes spaced 3/4"-on-center.Also Available from Rockler:Rockler 3/8" Dowel Drilling JigRockler 1/2" Dowel Drilling JigTechnical Details:Delivers a quick joint setup in just a moment of timeNo need to transfer marks from the face to the edge, or measure and mark with a tape measureSimply set your two parts together, strike a line across the face of the joint and line up the jigMade to last with a 3/16" acrylic face and hardened steel drill guides1/4" guide has holes spaced 3/4"-on-centerJig is designed to center dowel holes on 1/2" thick stock.Drill BitStop Collar and Stop Collar Wrench