1. Suitable for Karcher K2 / K3 / K4 / K5 / K6 / K7 washers 2. Scenario: Used for sealing peripheral parts of high pressure car washers, such as brushes, spray cans, water hoses, etc 3. The o-ring is made of rubber material with excellent waterproof and dustproof performance 4. Compatible with many types of washers, easy to use 5. Disassembly: turn the yellow buckle counterclockwise, then pull out can be, when pulling out, please be careful of the sealing ring in the tube fall off 6. Installation: Place the appropriate sealing ring into the mouth of the tube, and then top the yellow buckle and turn it clockwise