Lock and Seal Fasteners: Prevents loosening of metal fasteners caused by vibration on engines, machinery, and vehicles Prevents Rust and Corrosion: Moisture-resistant formula protects from leaks, rusting, and corrosion and eliminates need to stock up on expensive lock nuts and washers Permanent Fix: Permanent seal prevents tampering and is only removable once cured by heating parts up to 500°F (260°C) Easy and Quick: Sets in 10 minutes and fully cures in 24 hours For Large Fasteners: Heavy duty, high-strength formula for use on threads for nuts and bolts up to 1 inch (25mm) Plastic-Free Outer Pack: The same reliable product you trust, now with eco-friendly outer packaging Color: Blue 0.20 oz Tube