Continuous-rim diamond-grit hole saw for clean, chip-free cuts in hard, brittle materials -- porcelain tile, ceramic tile, granite, marble, slate, and glass. The 1-3/8" bonded diamond edge stays sharper longer than carbide grit and removes material faster, with an integrated wax lubricant strip that cuts friction and heat to extend cutting life.

• Cutting diameter: 1-3/8"
• Continuous-rim diamond-grit edge for smooth, chip-free cuts
• Integrated wax lubricant reduces friction and heat build-up while cutting
• No pilot bit required -- start the cut at a 45-degree angle or use a drilling jig
• Cuts porcelain tile, ceramic tile, granite, marble, slate, and glass
• Compatible with the Diablo Snap-Lock Plus mandrel system for quick cup changes
• Designed for use with a handheld drill (corded or cordless)

Tip: Standard door lockset holes (the common bore size) and faucet bodies. Run the drill at moderate speed (around 500-1000 RPM depending on material), keep light pressure, and drip water or run a wet sponge on the cut to flush dust and cool the diamond grit -- it extends saw life and prevents glaze-over on glass and porcelain.