Diamond MAX 1-1/2 in. Hole Saw, For Tile, Stone, and Glass, Up to 10X Longer Life vs. Standard Hole Saws, Higher-Grade Diamonds for Maximum Heat and Fracture Resistance, Improved Braze for Superior Diamond Retention, 1/4 in. Quick-Change Hex Shank, Large Slug Ejection Slot, Versatile Single Cutting Solution.