TOOGOO(R) 6 x Plastic Flexible Water Oil Coolant Pipe Hose With plastic flexible body, light weight and easy to install with any direction and angle Widely used for lathe, milling, CNC machine, hydraulic machinery and water cooling system Material: Plastic Thread External Diameter: Approx. 1/2 inch / 1.25 cm Round Nozzle Inside Diameter: Approx. 0.1 inch / 0.3 cm