PRO-KLEEN POWERFUL 750W DIRTY/CLEAN PUMP & 20M HOSE: Ideal for any drainage task large all small, perfect for floods, swimming pools, hot tubs, ponds, cellars, basements, irrigation and more. Sturdy layflat hose inner diameter is 25mm (1 inch). Made from quality heavy duty flexible blue PVC, reinforced with polyester for maximum strength and flexibility. Working pressure 4 bar - bursting pressure 12 bar, operating temperature -5℃ to 65℃.