Prepares surface, accelerates curing, and promotes maximum performance of Park Tool TLR1 and TLR2 Threadlockers as well as RC1 Retaining Compound \n Must be used on all component, fastener, and carbon fiber surfaces in conjunction with threadlockers and retaining compounds that contact carbon fiber such as PF30 bottom brackets or brackets or bearings pressed into carbon fiber frames. Failure to do so could result in permanently bonded parts \n Law prohibits ORMD materials from shipping by air