Standard Carbide 556 Description Head Diameter (mm): 0.8 Head Length (mm): 4.2 Overall Length (mm): 19.5 An account is required to purchase on Trihawk. More info Create account Login SKU: FG 556 Categories: Crosscut Straight Fissure, Standard Carbide Burs Related products Standard Carbide 57SS Head Diameter (mm): 1.0 Head Length (mm): 4.2 Overall Length (mm): 16.5 Standard Carbide 557SS Head Diameter (mm): 1.0 Head Length (mm): 4.2 Overall Length (mm): 16.5 Standard Carbide 6 Head Diameter (mm): 1.8 Head Length (mm): 1.8 Overall Length (mm): 19.5