Cheap And Discounts Atmospheric Pressure Sintered Silicon Carbide Square Chip Round Chip Round Ring 0.5,0.8,1.0,1.5,2.0,2.2mm Thickness Wholesale. Buy Directly From Merchant Go to School Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.