Flexible Cylinder Hone Compatible Bore Diameter - Maximum 1 in Compatible Firearm Caliber Not Applicable Stem Diameter 0.23 in Abrasive Length 3 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 Primary Material Application Cast Iron Steel Stainless Steel End Marking Color Not Applicable Stem Marking Color Not Applicable