Threadlockers lock threaded assemblies and keep them from loosening Compare to Loctite� 242/243� Park Tool AP-1 Adhesive Primer must be used to prep all components, fasteners and carbon fiber surfaces prior to application of Park Tool threadlockers, failure to do so may result in permanent bonding Thread Locker 10ml TLR-1UPC/EAN/GTIN: 763477007667