A hole saw (also styled hole saw), also known as a hole cutter, is a saw blade of annular (ring) shape, whose annular kerf creates a hole in the work piece without having to cut up the core material. It is used in a drill.

Hole saws typically have a pilot drill bit at their center to keep the saw teeth from walking. The fact that a hole saw creates the hole without needing to cut up the core often makes it preferable to twist drills or spade drills for relatively large holes.

Specification

Size in MM: 19, 23, 32, 38, 51

54, 60, 64, 70, 76, 80 MM