Sinkwork Cut Polish Granite 3/4" Full Bullnose 1 3/8" core bit grinding drum DVD

((h) one 4 GB USB, it includes two video, one of it is "How to Fabricate Granite countertop DIY Undermount sink", the other is "How to Fabricate Granite Countertop DIY, Profile & Polish). (b) 1 Piece of 1 3/8" / 35mm diamond core bit / hole saw to do granite concrete travertne quart hole cutting (5/8"-11 thread arbor).

eBay