Grinding Plate Round Segments Hard Bond for Soft Concrete Supreme BLACK; 2 - 1"" Round Diamond Segments x 18/20 Grit Each grinding plate is designed to give optimum performance in concrete preparation, leveling concrete surfaces and removal of various thin coatings. Hard bond is perfect for soft abrasive materials. The various segment and bond configurations can assure you will find exactly what you need to complete your job." <div style=" background: #0073aa; color: white; padding: 10px 15px; font-size: 18px; ">Free Shipping for all diamond orders over <strong>$300</strong> in value. Non-diamond items are not included.</div>