MOTO-D Billet Motorcycle Bar Ends for sportbikes include two expansion adapters for fitment in most motorcycles with clip-on bars ranging from 12-18mm (ID). Weighted to absorb vibration and road noise plus act as bar end sliders. Anodized, Billet Aluminum, 12 grams each, sold 2/set (left and right side). Racetrack Tested. 1-Year Limited Warranty.