ANVER Vacuum Cups and Suction CupsModel: 1/8″ NPT Female Thread FittingPart Number: OCF2-18F-NPT Electro-Less Nickel-Plated Brass Vacuum Fitting Part No. Connection Thread Size LHeight Added to Assembly in. (mm) OCF2-18F-NPT 1/8″ 0.47 (11.9)