This Karcher 500ml Glass Cleaning Concentrate provides streak-free results when used in conjunction with a Karcher Window Vac It allows for the non-aggressive removal of dirt grease insects emissions and water marks without any surface damage The bio-degradable formula ensures that the detergent is kind to our environment as well as providing perfect streak-free results Compatible with KV 4 Vibrapad WV 1 WV 2 Plus WV 5 Plus N WV 6 Plus N WV 6 Premium WV Black Edition WV 1 Plus WV 2 Premium Plus WV 5 Plus Non-Stop Cleaning Kit GB WV 5 Premium Non-Stop Cleaning Kit GB WV 50 WV2 WV2 Premium WV5 Plus Size 500ml