Trend TREPHJIG Pocket Hole Kreg Jig is for fast and accurate joining of timber and plywood. As a result, gives strong instant joints. Solid hardened bushes with variable pitch of 29mm to 63mm. This Trend jig can be used on timber, MDF, plywood and blockboard. So, it allows a variety of joints to be created individually. Plus, it uses square drive self-tapping screws. The workpiece can be handled immediately after gluing & screwing creating time saving benefits. Lastly, there is no clamps required.