Pear 2.1 mm Dia. Fine Grit Diamond Bur 5 per pack. 237.21F1237. 21F1, PEAR, 2. 1 MM DIA, FINE GRIT DIAMOND BUR, 5 PER PACK ISO Number: 237 Shape: Pear Roughness: Fine Grit Size: 53 63 m Head Dia (mm): 2. 1 Pieces per pack: 5 Product Code: 237. 21F1 ALT Code (if any): 237EX 21F SKU: 1590 EXF BENEFITS OF DIAMOND BURS This product has a stainless steel working part that is coated with natural diamonds. It is used as a grinding instruments on hard tissues such as teeth and bones. It can also be used for grinding