Check the listing for details. CROSSTECH MultiUse Dental Diamond A4F, ROUND 801/018F, Fine, 5 Burs. Condition: New. Listed at 9.90 USD. Premium Multi-Use CROSSTECH Diamond Burs 801/018F (A4F) - (1.8 mm head size), Fine Grit, Friction Grip Shank used with High Speed Handpiece, Round (5 Burs Per Pack) . Premium Multi-Use Diamond burs have the similar quality as the most of expensive multi-use diamond burs on the market. There are over 1200 different shapes and grits, we offer one low price for them all. Five burs per package, manufactured with natural diamonds which produce more cutting surfaces than synthetic diamonds; also Swiss multi-coating technique is used to offer the highest level of cutting efficiency with less clogging and durability. One-piece stainless steel shanks with special heat treatment ensure rigidity, strength and precision. Powered by eBay Turbo Lister The free listing tool. List your items fast and easy and manage your active items.