Park Tool RC-1 is used to prepare non-threaded parts such as bottom bracket cups sealed bearings and other press fit components. RC-1 expands and hardens as it cures filling gaps and ensuring secure installation.10 ml (0.34 fl oz) bottleCompetes with Loctite 680Not recommended for threaded applicationsNOTICE: When retaining compound or threadlocker is used on carbon fiber frames or components adhesive primer such as Park Tool AP-1 must first be applied to all component fastener and frame surfaces. Failure to do so could result in permanently bonded parts.CAUTION: Some painted surfaces can be sensitive to threadlockers retaining compounds and primers. Test first on an inconspicuous area to see if it causes a stain or discoloration. Clean off any excess from painted surfaces immediately.