The Milescraft HardwareJig™ is a simple and accurate way to repeatedly position, drill, and mount cabinet drawer and door hardware. The adjustable design allows you to quickly reconfigure the jig to install knobs, handles, and pulls. HardwareJig™ Features: Metal ruler construction Adjustable sliding stops lock in place to align jig and allow repeated positioning on multiple pieces Reversible design allows you to transfer jig from left door to right with a simple flip, keeping hardware position locked inThree steel 5mm (3/16”) bushings create accurate, straight holes and are designed to lastCentering notches align HardwareJig™ to center marks for perfect placement when installing drawer knobsInstall pulls and handles from 1-1/4” to 10” long Includes 5mm (3/16") Drill Bit:Drill Bit: 5mm Brad PointScale: Imperial and MetricMarkings: 1/16" and 1mm