uxcell 20M 65.6Ft 4mm x 2.5mm Pneumatic Air PU Hose Pipe Tube Clear Product Name: Polyurethane Air Tube; Material: Polyurethane(PU) Outside Diameter: 4mm / 0.157"; Inside Diameter: 2.5mm / 0.098" Wall Thickness: 0.75mm / 0.029"; Total Length: 20M / 65.6Ft Color: Transparent; Weight: 216g Package Content: 1 x Polyurethane Air Tube