Seamless steel tubing Wide variety of bends so you get that just-right fit and feel Smooth, unknurled and notched for Throttle-By-Wire Made in the U.S.A. 1" DIAMETER HANDLEBARS NOTE: When using Throttle-By-Wire (TBW) handlebars on a metric motorcycle, you must order TBW plug PART #0634-0331 or 0601-2828 (sold separately). HANDLEBAR,XWIDE DRGSTR BK HANDLEBAR,XWIDE DRGSTR BK