and high quality. Made of high quality material, durable and practical to use. Delicate and exquisite, highly match the equipment. Has higher heat resistance and stretchability, and is easier to install. Solid and durable, long service life. Without this sealing ring, the nozzle of the cleaner will cause the phenomenon of back spray when in use, which is likely to cause . So when you find that the sealing ring is aging and damaged, please replace it in time. Replacement O-ring set for replacement of O-rings for diverse cleaner accessories. Including safety lock, detail nozzle, extension, hose and iron connection. Useful spare part set for uninterrupted use. Heavy duty O-rings for pressure washers and cleaners. Fits behind the nozzle. on the and hose (that screws onto the machine)on all HD and HDS machines. Also fits K2 K4 K5 K6 K7 Number: 2.640-729.0 Colour:As Shown Material:plastic Package Contents: 1 set x O Ring Pressure Washer Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.