Chrome Billet Round Motorcycle Mirrors for Aprilla,Buell,KTM Brand New! Sold as a pair (2 mirrors). Mirror lens is glass and provides more magnification than standard mirrors thereby enhancing your safety, by increasing your field of view Mirror head is designed for easy adjusting by pivoting in/out and can rotate 360 degrees. Mirrors are designed to be 100% weatherproof Mirrors are chrome billet 100% metal no plastic whatsoever. Mirrors use 10mm metric threads which are included. Dimensions: Diameter of glass mirror: 4" (102mm), Height of glass: 4" (102mm), Length of mirror stem: 7 & 3/4" (197mm), Length of threads: 0.75 inches (19mm), Width of threads: 10mm 100% Money Back Guarantee! No questions asked!