Product Description The IRWIN 373238BX 2-3/8" 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 result is a tool composed of two types of metal welded edge-to-edge, also known as bi-metal construction.
Engineered and manufactured for exceptional sharpness and durability, the IRWIN Hole Saws will cut much more than wood.
They will 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 reduces harmonics and enhances performance.
Additionally, the variation in depth of gullets between the blade's teeth provides more efficient chip clearance, giving you greater cutting speed.
