Emulsion shocks mix with oil & air, it is easy to build and works better in a bumps and jumps, landing and overall in a rough surface feels good.CNC machined aluminum shock bodies and aeration screwsTitanium gray anodized shock bodiesRed anodized aeration screwsLower shock ends includes red anodized aluminum ballsFully threaded for rapid adjustmentDelrin pistons3.5mm thick shock shafts Shaft exits through double O-ring sealsEasy load shock seal assemblyLaser engraved for authenticityFits 1/10 scale crawlers & trucks, 1/10 scale EP buggys and Short course trucks (such as Axial SCX10, Associated B44 and SC10 4x4)