Rifle Chamber Hone Compatible Bore Diameter - Maximum 3/8 in Compatible Firearm Caliber .357 Mag Stem Diameter 0.14 in Abrasive Length 1 5/8 in Overall Length 14 in Abrasive Material Silicon Carbide Grit 400 Compatible Tool Type CNC Machine Drill Drill Press Primary Material Application Brass Compatible Bore Diameter - Minimum Not Applicable End Marking Color Not Applicable Grade Coarse Stem Marking Color Not Applicable