Sorry - this product is no longer available11.521 RUBY CRYSTAL POINTS #21Fast cutting, tough points and cones for accurate grinding of steel, porcelain and glass, as well as for soft and precious metals.SKU: 11.521Manufacturer part number: 11.521Vendor: Grobet USA $26.50 This product has a minimum quantity of 12Qty: Add to cart Custom wishlist OKAdd to wishlistAdd to compare listEmail a friendShapes are securely mounted on 3⁄32" mandrels for use on flexible shaft machines. See illustrations for individual shapes. Sold by the dozen. Prices vary.