Park Tool TLR-2 High Strength Threadlocker Park Tool TLR-2 High Strength Threadlocker is a good option for securing troublesome threaded assemblies found on a bicycle, such as fasteners with poor fitment or loose tolerances. TLR-2 semi-permanently bonds threads for a secure, long-lasting fit. TLR-2 is oil tolerant and compatible with steel and aluminum threads (not recommended for titanium threads). It is recommended to first prepare threaded surfaces with Park Tool AP-1 Adhesive Primer, which accelerates curing and eases future removal. 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. Park Tool offers a full line of products for thread preparation, including our line of threadlockers and retaining compounds: Park Tool TLR-2 High Strength Threadlocker Park Tool TLR-2 High Strength Threadlocker is a good option for securing troublesome threaded assemblies found on a bicycle, such as fasteners with poor fitment or loose tolerances. TLR-2 semi-permanently bonds threads for a secure, long-lasting fit. TLR-2 is oil tolerant and compatible with steel and aluminum threads (not recommended for titanium threads). It is recommended to first prepare threaded surfaces with Park Tool AP-1 Adhesive Primer, which accelerates curing and eases future removal. 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. Park Tool offers a full line of products for thread preparation, including our line of threadlockers and retaining compounds: TLR-1 Medium Strength Threadlocker TLR-2 High Strength Threadlocker RC-1 Press Fit Retaining Compound AP-1 Adhesive Primer Add to Cart Buying Options Add to Cart Add to Cart Customer Reviews 4.7 out of 5 stars 210 — 4.6 out of 5 stars 179 4.6 out of 5 stars 123 Price $17.95$17.95 — no data $19.95$19.95 $28.95$28.95 Recommended application Many threaded applications found on a bicycle Permanent solution for threaded applications with sloppy tolerances or poor fitment Non-threaded parts like press-fit bottom bracket parts, sealed bearings etc. In conjunction with any application of TLR-1, TLR-2, or RC-1. Mandatory for carbon fiber applications. TRUSTED SINCE 1963 Since our origins in the back of a bike shop in 1963, it has been our sole mission to design and manufacture high-quality tools that empower mechanics and riders of all skill levels to service their bicycles. As with our other 500+ tools, our threadlockers are a product of our decades of experience and expertise in the industry, in the shop and on the trail.