Team Associated's 50wt (640 cSt) silicone shock fluid is a 100% pure silicone oil designed for RC car shock absorbers, known for its consistent viscosity that is stable in both hot and cold weather. As a "Factory Team" product, this high-performance fluid provides consistent viscosity and is laboratory-tested, made in the USA for Team Associated by Lucas Oil Products, Inc.. It comes in a 2 oz (59ml) bottle with a flip-top cap for easy dispensing. The "50wt" rating indicates it is thicker than lower-weight oils, and "640 cSt" is its metric viscosity measurement, allowing for fine-tuned adjustments to vehicle handling,