Suehiro Toishi constantly developing new products and upgrading the old favorites. New Cerax super high grade stones are top of the line. Suehiro Corporation made further investigation to produce synthetic whetstones superior to natural whetstones. Fine-grain ceramic abrasives fired at high temperature, smooth surface with a very low binder always ensure a fast cutting and leaves mirror-polishing not achievable with other japanese stones; Suehiro Cerax Grit Specifications:
Grit 280: 73.5～62μ;  Grit 320: 62～52.5μ;   Grit 800: 22～18μ;   Grit 1000: 18～14.5μ
Grit 1500: 11.5～8.9μ;  Grit 3000: 5.9～4.7μ;  Grit 6000: 2μ;  Grit 8000:1μ