The Karcher 9.112-014.0 Pressure Washer Trigger Gun helps provide controlled operation of compatible Karcher pressure washers during cleaning tasks. It works by allowing the operator to start and stop the high-pressure water flow through the trigger mechanism, providing convenient control while washing surfaces, equipment, and outdoor areas. Made to replace a worn, damaged, or leaking... https://www.wholetoolbox.com/karcher-9-112-014-0-pressure-washer-trigger-gun/9.112-014.0.html