These great looking risers are machined from 6061-T6 billet aluminum and take regular 1" (25.4mm) diameter handlebars. They feature trick mounted flat top covers to keep the screws out of sight. Available in chrome or black anodized featuring clear machined teardrops. Risers are 1/2'-20 UNF threaded for our ZPN 233382 riser bolts and sold in pairs.