Diamond 257SPMDescriptionHead Diameter (mm): 2.3Head Length (mm): 5.0Grit: Medium An account is required to purchase on Trihawk. More info Create account Login SKU: 257SPM Categories: Gross Reduction & Spirals, Diamond BursRelated products Diamond 001-010C Head Diameter (mm): 1.0Head Length (mm): 1.0Grit: Coarse Diamond 225-016C Head Diameter (mm): 1.6Head Length (mm): 6.5Grit: Coarse Diamond 289-012C Head Diameter (mm): 1.2Head Length (mm): 8.0Grit: Coarse