<b>Features:</b><br> LEFT side is 7/8", RIGHT side is 1" for twist gas throttle<br> <b>Notice:</b> Will only fit on Twist throttle, not fit on Push Throttle like ATV. If for ATVs or UTVs, you might need get 2 sets!<br> <br> <b>Fitment:</b> <br> Will Fit all motorcycle bike 7/8" Standard Handlebars. <br> Install suggestion:When you install the throttle handle, please put a drop of oil into it (Not much, just need a drop). Then rotate it and slowly push it in.