For precise drilling and positioning of handles on doors, flaps and drawer frontsConvertible side stop, can be used horizontally and verticallyHardened drilling bushings: for drilling ?4.3?4.6 mm (11/64"?3/16")Drill hole spacing: adjustable from 64?143 mm (2 1/2"?5 5/8")Distance from edge: adjustable from 26?103 mm (1 1/16"?4 1/16")