Features: Premium 6 pack stainless steel check valves kit ensures reliable performances and longevities for high pressure pump systems. Corrosion resistant stainless steel construction, maintains great pressure level in demanding cleaning operations. Designs for technicians and equipment owners requiring high grade replacements for 280/380/55/580, and other washer pump models. Restores water flows efficiency in pressure washers used for automotive detailing, industrial equipment maintenance, or residential surfaces cleaning. Engineered to pair with exact high specifications, this check valves kit delivers seamlessly compatibility and extended service life for professional pump systems. Specifications: Material Stainless Steel Color: Black Size:Approx. 2x1.82cm/0.79x0.72in Package Includes: 6pcs Pressure Washer Pump Check Valves note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you will not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual color.