IVY Classic Industries is dedicated to producing a comprehensive, quality line of power tool accessories and hand tools. This IVY Classic Lock Installation Kits include an adjustable guide template for easy and exact drilling with snap-lock arms for selecting door width and backset as well as two hole saws and an arbor with a pilot drill. The guide template fits 1-3/8-inch and 1-3/4-inch thick doors and 2-3/8-inch and 2-3/4-inch backsets. This kit is designed for use on steel and wood doors and is constructed out of bi-metal with an M-3 cutting edge.