- 4/6 Variable Pitch Teeth - for reduced noise and improved performance
- Bi-Metal Construction - for toughness and long life
- Electron Beam Weld - for stronger, longer lasting teeth
- Variable Depth Gullets - provides more efficient chip clearance
- Will cut holes in aluminum, copper, iron, stainless steel and zinc
![Irwin® Bi-Metal Hole Saw, 3 5/8", 2 1/4" H x 5 1/2" L, #IR-373358BX (1/Pkg) Irwin® Bi-Metal Hole Saw, 3 5/8", 2 1/4" H x 5 1/2" L, #IR-373358BX (1/Pkg)](https://cdn11.bigcommerce.com/s-gdy1ehz/images/stencil/500x659/products/259935/449161/373090BX__61587.1669665966.jpg?c=2)