Loctite 506166 Blue Medium Strength Threadlocker Stick, 9-gram This medium strength anaerobic threadlocker offers the same locking strength and sealing capabilities as our traditional blue threadlocking liquid Wax-like stick is conveniently packaged in a seld-feeding stick applicator Well-suited for difficult repairs, as in overhead applications Great for valve cover bolts, water pump bolts, oil pan bolts, drive shaft bolts, rocker arm adjustment nuts and carburetor studs Removable with hand tools