This is a 2oz bottle of Team Associated silicone shock oil designed for use with oil-filled shocks. Team Associated shock oil is crafted from 100% pure silicone oil, ensuring consistent performance without thinning in hot weather or thickening in cold conditions. The higher the oil's weight number, the thicker the viscosity, providing customizable shock tuning for your RC vehicle. Compared to Team Losi shock oil with the same viscosity rating, Team Associated shock oil is generally slightly thinner. Please use the pull-down menu to select your desired oil weight.