Concealed Jig Hinge, Designed For The Installation Of Cabinet Doors, Allows For Accurate Hinge Positioning, Repeatable Results With Built-In Measuring Scales, Reliable Drilling With Bit Guide & Stop Collar, Simple To Use With Any Drill No Special Tools Needed, Adjustable Cams Ensure Proper Hinge Offset, Strong, Lightweight Materials For Easy Handling, Durable Carbide-Tipped Drill Bit Included For Convenience, THIS ITEM IS ONLY AVAILABLE TO KREG DEALERS.