Permatex® 24010 Medium Strength Threadlocker Blue Gel - pen 10 grOEM specified. The gel formula offers "liquid reliability" without drops, globs, rubbish or waste. Apply the thread locker exactly where you want it ... to the part! Medium strong thread lock. Ideal for bolts and nuts 6 mm to 20 mm. Secures, seals and prevents vibrations. Protects against corrosion. Removable with hand tools. Compliant with ASTM D5363 AN0221 (Mil-S-46163A, type II, Grade N).