Joker Machine Risers Pullback Clear 03-866S Fully CNC-machined out of solid 6061 T-6 billet aluminum for maximum strength Special alloy gold zinc clamp bolts included Have a 2-1/2in. rise with 1-1/2in. pullback Machined cutouts make these risers extremely lightweight without sacrificing strength Made for use with 1in. diameter handlebars