About this item [ Personalized Style ]: Using this mirror mount clamps, you can install your favorite motorcycle mirror freely and enhance the look for custom motorcycle or scooter [ Easy To Install ]: Fit for motorcycles with 7/8″ outer diameter handlebar, use 8mm wrench to install it on the bar (Wrench is not include in package) [ High Quality ]: Made of quality aluminum alloy, the mirror mounts are solid and it resists wear and rust [ Closewise Threading]: This mount holder fits mirror with 10mm right-thread mounting bolt, and its threading depth is 14mm, you may need to use washer if the bolt of your mirror is too long [ Size ]: Clamp hole width: 0.87 inch, thread width: 0.39 inch, thread depth: 0.55 inch