GBD400120AO FLEX-HONE, 4.000" (102mm) bore, 13.5" OAL, 120 Grit, Aluminum Oxide (AO), Flex-Hone Tool, Mfr#: GBD400120AO

Flexible Cylinder Hone, Compatible Bore Diameter – Maximum 4 in, Compatible Firearm Caliber Not Applicable, Stem Diameter 0.31 in, Abrasive Length 6 in, Overall Length 13 1/2 in, Abrasive Material Aluminum Oxide, Grit 120, Operating Speed – Maximum 600 RPM, Primary Material Application Stainless Steel, Compatible Bore Diameter – Minimum 3 1/2 in, End Marking Color Silver, Stem Marking Color Black