Chrome Billet Golf Club Motorcycle Mirrors Pair for Yamaha Royal Star, Deluxe Brand New! Chrome billet "golf club" motorcycle mirrors. Sold as a pair (two mirrors) Housing and stem are 6061-T6 Billet aluminum & triple chrome plated. Mirror lens is glass and provides more magnification than standard mirrors thereby enhancing your safety, by increasing your field of view. Mirror head housing can be adjusted and includes a lock nut between the housing and stem which once tightened, keeps the housing right where you want it. Mirrors use 10mm metric threads. Dimensions: Diameter of glass mirror: 4 inches (101mm), Length of mirror stem: 5 inches (127mm), Length of threads: 1.5 inches (38mm), Thread size: 10mm 100% Money Back Guarantee! Get your items fast! We ship from within the USA!