Black Billet Golf Club Motorcycle Mirrors Pair for Honda CRF 150,CRF 230 Black Aluminum Billet "golf club" motorcycle mirrors. 100% metal-no plastic whatsoever. Sold as a pair (two pieces) Housing and stem are 6061-T6 Billet aluminum & feature a black finsh. Mirror lens is 100% distortion free 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! No questions asked!