AST-LOCK 39712 71HS Anaerobic Threadlocker, 50 mL, Red AST-LOCK anaerobic cure within metal connections, in the absence of oxygen and at ambient temperatures AST-LOCK anaerobic threadlockers provide a solution for every practical industrial application, lock screws in place and secure bolts and studs, use right out of the bottle AST-LOCK anaerobic are single-component, fast-curing, and solvent-free Hardening only within the joint, do not block or contaminate the system RoHS compliant