Circuit: Darvall SWT (Smooth-Wall Tubing) 2 to 30kg

Safe, low resistance SWT with 1/3 volume of 22mm (7/8") corrugated hose. SWT delivers rapid response at low, environmentally responsible gas flows. Lightweight with minimal drag, SWT dries quickly & completely. Size: 12mm (1/2") ID x 1.6m (5') long with 22mm ID & 15mm ID molded ends for secure connection. Includes 15mm ID Y-Piece; 0.5L & 1.0L bags. For cats, rabbits & small dogs 2kg to 30kg (4.5 - 65lb).