QEP Diamond Hole Saw 1-3/8 in.

For cutting 1-3/8 inch holes in the hardest porcelain, ceramic, marble and granite

Fits standard 1/2 or 3/8 inch drill chucks

Only for wet use with cordless drills

Metal saw with diamond grit edge for long lasting use, limited wear, faster cuts, less dust and less chipping

Water cooling system keeps hole saw cool for a longer life