KARCHER HOSPORTER 1/2 "- 5/8" - 3/4 "Aqua Stop (2.645-192.0) is a perfect accessory that automatically stops water flow. This connectivity is ideal for combining 1/2" 5/8 "and 3/4" gangs and 3/4 "sized hoses Provides compliance with hose sizes. KARCHER AQUA STOP is a perfect choice for use in irrigation and garden work with an easy installation and high sealing ability. Made of high quality materials, provides long-term use. KARCHER AQUA STOP hose is very useful in connecting, gardening, car washing and other cleaning work.