5/16 in. Diamond Hole Saw

Spyder diamond hole saws cut round openings in ceramic, porcelain, granite, slate, marble and glass. Sizes range from 1/4 in. to 1-3/8 in. for selecting the opening your installation requires. They also work on fiber cement board and laminates. - Wet or dry use - Boron-coated industrial diamond abrasive - Self-sharpening abrasive - Single piece, high-alloy steel construction - Made in the USA