- 4/6 Variable pitch teeth for reduced noise and improved performance
- Bi-metal construction for toughness and long life
- Clearly printed hole saw sizes for quick retrieval and added productivity
- Contains the most commonly used sizes for plumbers, electricians and general applications
- Super hard steel RC 65-66 for increased life
![Irwin® Bi-Metal Hole Saw, 1 7/8", 2" H x 3 1/2" L, #IR-373178BX (1/Pkg) Irwin® Bi-Metal Hole Saw, 1 7/8", 2" H x 3 1/2" L, #IR-373178BX (1/Pkg)](https://cdn11.bigcommerce.com/s-gdy1ehz/images/stencil/500x659/products/260734/449108/373090BX__27438.1669651603.jpg?c=2)