The IRWIN 373100BX 1" Bi-Metal Hole Saw is made from the highest quality bi-metal.
Attached to a carbon steel body, the teeth are secured by a process called electron beam welding.
The tool is composed of two types of metal welded edge-to-edge, known as bi-metal construction.
Engineered and manufactured for exceptional sharpness and durability, the IRWIN Hole Saws cut much more than wood.
They also cut holes in aluminum, copper, iron, stainless steel, and zinc.
The hole saws feature a tooth pitch that varies from 4 to 6 teeth per inch.
This variation reduces harmonics and improves performance.
Additionally, the depth variation of gullets between the blade's teeth allows for more efficient chip clearance, resulting in greater cutting speed.
