The item is a set of hydraulic dust caps. Keep the coupler clean and protects the hydraulic system from damage. Upgraded hydraulic dust caps for high flow performance and longest life. Simple design, just connect to the coupling and push it to fix it. Suitable for personal or maintenance personnel use. Features -Color:Assorted Color-Material:Plastic-Size:17.00X2.70X1.00cm/6.68X1.06X0.39in- Each hydraulic coupler dust cap plug set features one male dust cap and one female dust cap.- The plug covers effectively protects hydraulic system from the elements via the quick coupler connection.- Outstanding workmanship, enable the hydraulic caps and plugs to use smoothly and tighten securely.- Integral retaining ring to hold the covers in place, can keep securely fastened.- Adopts precision production to the stable characteristics and high reliability.Packing list: 4 x Sets of Hydraulic Quick Coupler Dust Caps