- OPTIMAL PERFORMANCE: Weldtec variable tooth design provides optimal cutting performance and reduced noise
- FAST CHIP REMOVAL: Variable depth gullets help minimize friction and efficiently eject chips
- BUILT TO LAST: Heavy-duty bi-metal construction increases durability for extended life
![Irwin® Bi-Metal Hole Saws, 4", 2" H x 5 1/2" L, #IR-373400BX (1/Pkg) Irwin® Bi-Metal Hole Saws, 4", 2" H x 5 1/2" L, #IR-373400BX (1/Pkg)](https://cdn11.bigcommerce.com/s-gdy1ehz/images/stencil/500x659/products/259130/449163/373400BX__36186.1669666789.jpg?c=2)