Uxcell a13070300ux0074 12 Meter 39.4ft 6mm x 4mm Pneumatic Air PU Hose Pipe Tube Product Name : Polyurethane Air Tube; Material : Polyurethane(PU) Outside Diameter : 6mm / 0.236";Inside Diameter : 4mm / 0.157" Wall Thickness : 0.75mm / 0.029";Total Length : 12M / 39.4ft Color : Black; Weight : 324g Package Content : 1 x Polyurethane Air Tube