SS White Trimming & Finishing Burs SS White carbide cutting heads are made with high quality fine-grain tungsten carbide, which produces a blade that is sharper and wears longer compared to less expensive coarse grain tungsten carbide. Blades made of fine grain tungsten carbide, retain shape even as they wear. Less expensive, large particles tungsten carbide dulls quickly as the large particles break from the blade or cutting edge. Man carbide manufactures use inexpensive tool steel for the carbide bur shank material. Specs: Shank: FG (Friction Grip) Shape: Bullet Multi-Use: Pack Size: Roll of 25 Additional Information: Overall Length: 19 Working Length: 3.8 Head Diameter: 1 Number of Blades: 12 Permanent Crowns: Yes Inlay/Onlay: Yes Temporization: Yes Posterior Composite: Yes Amalgam Restoration: Yes Pedodontics: Yes Dental Laboratory, CB: Yes Dental Lab Acrylic: Yes Finishing Bur: Yes