Click to expand Tap to zoom Helix Terzo Porcelain Grinding Wheels by Helix Sale $95.00 | / SKU FDW4560 Coarse - $95.00 Medium - $95.00 Fine - $95.00 Coarse Medium Fine Size 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart 100% diamond flaps designed to effortlessly smooth, grind, and shape porcelain, ceramic, granite, marble, natural stone or glass. Great for bullnosing, cleaning up cuts, shaping porcelain, and much more. Fits on any 5/8" - 11 threaded angle grinder.