<p>Positioner for Diamond Drill Bits and Hole Saws.</p><br/><h3>Product Features</h3><br/><ul><br/><li>Available for Drill Bits from 4mm to 83 mm</li><br/><li>Made of durable ABS plastic</li><br/><li>Fast and easy Drill Guide adjustment</li><br/><li>Four bearings</li><br/><li>High quality rubber suction</li><br/></ul>