Shotgun Forcing Cone, Compatible Bore Diameter – Maximum 11/16 in, Compatible Firearm Caliber 20 Gauge, Stem Diameter 0.19 in, Abrasive Length 1 5/8 in, Overall Length 10 in, Abrasive Material Silicon Carbide, Grit 180, Compatible Tool Type CNC Machine, Drill, Drill Press, Primary Material Application Brass, Compatible Bore Diameter – Minimum Not Applicable, End Marking Color Not Applicable, Grade Medium, Stem Marking Color Not Applicable