This 1-3/8in diamond hole saw is for cutting thru marble, porcelain, ceramic and glass tiles. This hole saw blade is not meant to be used with a hammer drill since those are made for smooth cutting. To extend the lifetime of the blade please reduce drill speed, reduce drill pressure, and increase water flow for lubrication while drilling. 

Features:

• For cutting thru marble, granite, tile ceramic, stone, rebar concrete, etc.
• Can be used for cutting holes for faucet taps, soap dispensers and other appliances
• Made of high strength carbon steel with blue smooth plating surface
• The diamond coated core drill bit removes complete circle from marble, porcelain, ceramic tile glass or other materials
• Requires minimum force for drilling thru tiles, for wet cutting applications only

Specifications:

• Model: 3P-35MM-BL-HS
• Material: carbon steel, diamond particles
• Drilling diameter: 1-3/8in or 35mm
• Drilling depth: 1-3/4in or 45mm
• Shank diameter: 3/8in or 10mm
• Overall length: 3-5/16in or 84mm
• Weight: 3.8oz or 109g

Package includes:

• Pack of three 1-3/8in or 35mm diamond drill bits