Keep dirt, dust, and moisture out of your hydraulic couplers with these simple but effective dust caps! This pack includes 2 complete sets – each set has one male cap and one female cap, designed specifically for 1/4 inch ISO-B hydraulic couplers. They’re made from durable PVC rubber that’s resistant to abrasion, tearing, impacts, and corrosion, so they’ll last in tough conditions. The snug fit and retention ring ensure a tight seal to protect your equipment on farms, construction sites, automotive shops, or industrial machinery. They’re easy to pop on and off, stretchy enough to fit comfortably, and measure about 350mm in length. A small, smart way to prevent damage and extend the life of your hydraulic connections!