Description: The mirror mount threading fits standard 10MM mirrors.For use with M10 x 1.25 banjo bolt. Standard size for most all Honda, Yamaha, Kawasaki and Suzukis.15.8mm (5/8") piston bore size. Fits 7/8" handlebars.Similar to Honda OEM part number: 45500-463-601, 45500-369-671, 45500-333-670 Can be used on Honda:CB350F - 1972-1974CB350G - 1973CB360T - 1975-1976CB360G - 1974CB400F Super Sport - 1975-1977CB400T Hawk - 1978-1981CM400C Custom - 1981CM400T - 1979-1981CB450K - 1970-1974CB450SC Nighthawk - 1982-1986CB450T Hawk - 1982CM450A Hondamatic - 1982-1983CM450C Custom - 1982CMX450C Rebel - 1986-1987CB500K - 1971-1973CB500T Twin DOHC - 1975-1976CX500 - 1978-1979CX500C Custom - 1979-1982CX500D Deluxe - 1979-1981CX500TC Turbo - 1982FT500 Ascot - 1982-1983GL500 Silver Wing - 1981-1982GL500I Silver Wing Interstate - 1981-1982CB550F Super Sport - 1975-1976CB550K - 1974-1978CB650 - 1979-1982CB650C Custom - 1980-1981CB650SC Nighthawk - 1982CB750A Hondamatic - 1976-1978CB750C Custom - 1980-1982CB750F Super Sport - 1975-1982CB750K - 1972-1982