XKH- Replacement of 1'' RISER SPIKE CUSTOM 6" RISE BILLET HANDLEBAR RISERS FIT FOR HARLEY CHOPPER CHROMED Motorcycle new Motorcycle Hole Diameter: 1" new Custom Spike style with hidden clamp bolts. Eliminate the handlebar top clamp with precision machined billet risers. Mount with coarse thread riser bolts. 6" Rise , 9" overall height. Fiment:Fits all Harley-Davidson models and any custom application. Mounting bolts are included.