SS White solid carbide burs 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 particle tungsten carbide dulls quickly as the large particles break from the blade or cutting edge. Specs: Shank: FG (Friction Grip) Shape: Straight/Round End Cross Cut Multi-Use: Yes General Dentistry: Yes Pack Size: Roll of 25 Additional Details: Overall Length: 17 Working Length: 3.8 Head Diameter: 1.0 Posterior Composite: Yes Amalgam Restoration: Yes Endodontics: Yes Oral Surgery: Yes Periodontics: Yes Dental Laboratory, CB: Yes Dental Lab Acrylic: Yes