Blind hole tapped for standard 1/2" x 13 mounting bolts Fits on all models with 3-1/2" center-to-center riser spacing Work with any standard 1" handlebar, Wild 1 Chubby Bars and most other bars with a 1" clamping section Use stock top clamp, after-market top clamp, or Wild 1 custom billet top clamps (with offset mounting holes) Made in the U.S.A.. 4.5" TALL STRAIGHT RISER SET GLOSS BLACK