Premium Material: Made of premium PVC and copper material, sturdy and durable, resistant to bending and wear. Compatibility: Suitable for Karcher K2, K3, K4, K5, K6, K7 pressure washers. Superior Performance: Maximum pressure rating up to 2320 psi/160 bar and maximum temperature 60C. Quick Connect & Release: Adapt the new type of click fittings on both ends, you can quickly connect or disconnect with the pressure washer and gun, saving time and effort. Note: Our pressure hose only fits the new style trigger gun with quick connect and quick release, and your gun must have a yellow button (not black), then our hose works. How to avoid high pressure water hose kinks? On hot and sunny days, stretch it and leave it for a few hours. Roll it up and store neatly. When you take it out, unlock it first, then leave it for 10 minutes. Then it should stay more upright. Warm Tips: 1. In winter, do not place the pressure washer hose outside after use, store it in a ventilated and dry place indoors. 2. In winter, it is necessary to drain the water from the jet washer hose in time, prevent it from freezing and cracking.