8-inch Professional Ultra Thin Diamond Lapidary Blade By 0.023-inch Wide By 1-inch (Attach a 5/8-inch Bushing) Arbor (Dazuan) 10 by 1 by 0.02 inch attach a bushing for transform to 5/8 arbor - Continuous Rim Lapidary blade and Professional grade diamond blade Designed for cutting rare and valuable materials and Continuous rim for ultra smooth cuts Produces smoother cuts, lasts longer and cuts faster than notched rim or plated diamond blades Used for cutting rare and valuable gem stone materials