Cheap And Discounts 20/pcs 6mm Diamond Burs Rotary Tool Sintered Diamond Burs Abrasive Grinding Head Accessoriesl Diamond Bits Wholesale. Buy Directly From Merchant hangzhou YOYO Boutique co., ltd. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.