Amazon.com : 1/4 IN. x 50 FT. Pressure Washer Hose Replacement for B & S, Craftsman, Generac & Karcher". The manufacturer is "Propulse" and the brand is "Propulse : Patio, Lawn & Garden
Kärcher 2.645-197.0 Plastic Hose repair piece 13 mm (1/2") - 15 mm (5/8") | Conrad.com
25 ft. Replacement/Extension Hose | Kärcher
Amazon.com: Karcher 50' 4000 PSI Replacement Extension Hose for Gas Power Pressure Washers – Quick-Connect/M22 : Patio, Lawn & Garden