Flexible Cylinder Hone, Compatible Bore Diameter – Maximum 3/16 in, Compatible Firearm Caliber Not Applicable, Stem Diameter 0.07 in, Abrasive Length 3/4 in, Overall Length 6 in, Abrasive Material Aluminum Oxide, Grit 600, Compatible Tool Type Brake Cylinder, Wheel Cylinder, Operating Speed – Maximum 1,200 RPM, Primary Material Application Stainless Steel, Compatible Bore Diameter – Minimum 3/16 in, End Marking Color Pink, Stem Marking Color Black