Concealed Hinge Boring Jig
This jig is an economical alternative to expensive drilling devices and confusing jigs. This simple tool quickly locates drill center points for all brands of hinges and mounting plates. Features a V-locator that works off of a center reference line. Jig can be adjusted for changes in door edge to cup alignment. Made of high impact polycarbonate, includes instructions. 35mm forstner bit sold separately.