Castle® Muscle Grease™ takes over as a lubricant where lithium and calcium grease leave off. The aluminum complex base of Muscle Grease™ enables it to excel in heavy load, extreme pressure situations and over a wide range of temperatures (0° F to 350° F) without melting, hardening, or thinning. It is 100% waterproof and resists corrosion from acids, alkalis, and salt. Muscle Grease™ sprays like a liquid to penetrate, and then sets up as an ultra durable grease. Uses: • Fifth Wheels • Electric Motor Shafts • Hinges • Cables • Pulleys • Piano Hinges Directions: 1. Shake the can well. 2. Spray evenly on the surface to be lubricated and let set. 3. Use extension tube for pin-point application.