Standard Carbide 558 Description Head Diameter (mm): 1.2 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 558 Categories: Crosscut Straight Fissure, Standard Carbide Burs Related products Standard Carbide 37 Head Diameter (mm): 1.4 Head Length (mm): 1.4 Overall Length (mm): 19.5 Standard Carbide 35 Head Diameter (mm): 1.0 Head Length (mm): 1.0 Overall Length (mm): 19.5 Standard Carbide 557 Head Diameter (mm): 1.0 Head Length (mm): 4.2 Overall Length (mm): 19.5