Flexible Cylinder Hone Compatible Bore Diameter - Maximum 5/8 in Compatible Firearm Caliber Not Applicable Stem Diameter 0.19 in Abrasive Length 2 1/2 in Overall Length 8 in Abrasive Material Silicon Carbide Grit 600 Compatible Tool Type CNC Machine Drill Drill Press Operating Speed - Maximum 1 000 RPM End Marking Color Not Applicable Stem Marking Color Not Applicable