Important Note: These o-rings and filters are compatible with cold water pressure washers only. - Set includes 2 each of: Green O-ring - 14.0mm od/8.6mm id/2.7mm cs; Yellow O-ring - 14.0mm od/9.8mm id/2.1mm cs; Red O-ring - 15.6mm od/10.0mm id/2.8mm cs; Blue O-ring - 18.0mm od/12.7mm id/2.65mm cs; Black O-ring - 15.0mm od/9.0mm id/3.0mm cs; Black filter - 25.0mm od/15.5mm id/3.5mm cs.