HOT SAUCE Brazed Countersink Core Bits are manufactured with premium grade diamonds.  Excellent for creating a bevelled tapered edge around the core hole. 
 
For use on Porcelain, Ceramics, Marble, Engineered Stones, Quartzites, and Granites!
 
Can be used wet or dry on a 5/8"-11 Grinder @ 4000rpm
 
Available in 3 sizes
40mm Hole x 60mm Taper
45mm Hole x 65mm Taper
50mm Hole x 70mm Taper