2 Black Round 4" Motorcycle Handlebar Mirrors Pair for Yamaha Motorcycles Brand New! Black, round motorcycle mirrors, featuring a sleek design and large 4 & 1/4 inch view area, allowing to clearly see what's behind you. Sold as a pair (two pieces) Mirror head is fully adjustable allowing you to easily adjust the mirror lens up, down, left, and right and completely around. Mirror head tension is adjusted via a screw, located on the back of the mirror head. Once tightened, the mirror head will remain right where you want it, preventing it from getting loose Dimensions: Diameter of glass lens (horizontally): 4.25" (108mm), Length of stem (not including threads) diagnolly: 7.5" (191mm), Height of mirrors: 9 inches (229mm), Length of threads: 1" (25mm), Size of threads: 10mm metric Mirrors have a solid metal, weatherproof stem and a very unique feature which makes them fit on any side of the bike you want -left or right side (as long as the bike takes the same mirror thread). Simply rotate the mirror stem towards whatever side you want the mirror to be on and now the mirror will fit on that side of your handlebars. Lens is also distortion free glass lens. 100% Money Back Guarantee!