The Hozelock Maxi Plus Hose is a good quality general purpose braided hose. The hose has 4 layers, a smooth PVC inner layer to allow maximum flow, a thick PVC layer to add strength, a braided polyester layer to stop expansion of the hose and a tough PVC outer layer. Diameter: 12.5mm (1/2in).Guarantee: 10-Years. Hose is guaranteed free of heavy metals.