Standard Carbide 557 Description Head Diameter (mm): 1.0 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 557 Categories: Featured Burs, Crosscut Straight Fissure, Standard Carbide Burs Additional information Additional information Weight N/A Related products Standard Carbide 35 Head Diameter (mm): 1.0 Head Length (mm): 1.0 Overall Length (mm): 19.5 Standard Carbide 556 Head Diameter (mm): 0.8 Head Length (mm): 4.2 Overall Length (mm): 19.5 Standard Carbide 33 1/2 Head Diameter (mm): 0.6 Head Length (mm): 0.6 Overall Length (mm): 19.5