Milescraft Pocket Jig 400 #1327 Woodworking Pocket Hole Jig SetAll Metal Construction Increased rigidity reduces the flex for more precise results Durable Drill Guides Height and width adjustable bushing blocks contain two, 3 8 steel drill guides that can be positioned for drilling boards from 1 2 up to 1 1 2 thick and holes from to 3 apart Dial In The Pressure Steel toggle clamp with micro adjust clamp head dials in perfect clamping pressure for different board thicknesses Store Your Stuff Convenient storage