Arctic Hayes ARC66404710 Drain Down Hose 10m The Arctic Hayes Drain Down Hose will suit most plumbing system drain downs. Made from flexible and tough natural red rubber. Will not kink or tear with regular use. Comes with a thumb screw hose clip. Specification: Internal Diameter: 12.7mm (1/2in) Outer Diameter: 19.05mm (3/4in) 1 x Arctic Hayes Drain Down Hose 10m