CrossFlex Standard Duty Bore Brush 4.5mm Diameter 320SC Grit, WEILER, Mfr# 34107

Flexible Cylinder Hone, Compatible Bore Diameter - Maximum 4 1/2 mm, Compatible Firearm Caliber Not Applicable, Stem Diameter 0.08 in, Abrasive Length 13/16 in, Overall Length 6 in, Abrasive Material Silicon Carbide, Grit 320, Compatible Tool Type Combustion Cylinders, Operating Speed - Maximum 1,000 RPM, Primary Material Application Steel, End Marking Color White, Grade Extra Fine, Stem Length 5 3/16 in