Review on Diamond-coated Brass Core Stained Glass Grinder Head Bit in 4 Sizes by Heather Shaw

Grit too coarse. Grinded a piece of glass, then quickly took the bit out of the grinder. The edges of the glass were chipping so badly that I was afraid to continue. I re-sanded the part with my old grinder to repair and smooth it out. I will not buy another racquet without considering # grit. The number is not listed in the description. live and learn