size - 0.4 (10mm); Outside diameter: between 0.7 (18 mm). Quick connect hose for karcher K2 K3 K4 K5 K6 K7. durable - high pressure extension hose with higher flexibility and rubber coating, durable and wear resistant. High voltage - 1000 2320 ps. Can be used at a maximum water pressure of 160 bar and a temperature of 60C.Easy to use - Immediately connect or reconnect the hose by pressing the lock button on the gun. widely used - for effectively cleaning and applying pipe cleaning components for pipes, drains and downspouts. Product Description Size: 6m Product Description: Inner Diameter: 8.8mm; Outer diameter: 12mm connection between: butcher cup; < Outlet fittings: click the "plugged fittings" button brass fittings features:Products from NIUNIU's store