Ergogrip Universal automatic coupling for hoses with 1/2” (12,5 mm) – 5/8” (15 mm) – 3/4” (19 mm) diameter. Special rubber-covered surface for a perfect grip. Rustproof (no metal parts) and shockproof, it is resistant to the elements, UV rays and very high pressures. Features automatic water shut-off valve – inserted at the end of the hose, water flow is interrupted by disconnection of the watering accessory.