1/2 In. Diamond Grit Hole Saws Diablo's High-Performance Diamond Grit Hole Saws Deliver Longer Life And Faster Material Removal When Boring Holes Into Tile, Stone, And Glass. A Continuous Rim Diamond Grit Edge Delivers Lasting Durability And Maximizes Cut Quality In Masonry Applications. An Integrated Wax Lubricant Cools The Cutting Edge And Reduces Friction And Heat Build-Up While Drilling Holes. Diablo's Hole Saws Are Compatible With Diablo's Snaplock Plus Mandrel System, Resulting In Quick, Easy, And Effortless Cup Changes.