Fully CNC-machined out of solid 6061-T6 billet aluminum for maximum strength Special alloy gold zinc clamp bolts included Have a 2-1/2" rise with 1-1/2" pullback Machined cutouts make these risers extremely lightweight without sacrificing strength Made for use with 1" diameter handlebars Bases are threaded for 1/2"-13 riser bolts Made in the U.S.A.. RISERS PULLBACK BLACK