This Bi-Metal hole saw kit was designed specifically for the locksmith. The lock hole saws are Industrial Quality M3 Bi-Metal and are for use on both wood and steel doors.
Sizes include:
- 2-1/8" (54mm)
- 1-3/4" (44 mm)
- 1-3/8" (35mm)
- 1-1/4" (32mm)
- 1" (25mm)
- 7/8" (22mm)