ANVER Vacuum Cups and Suction Cups Vacuum Cup Fittings – Group 3 Part Number: HS18 Vacuum Fitting Part No. Thru Hole Dia. in. (mm) Connection Thread Size H Height in. (mm) Item Weight oz. (grams) HS18 0.23 (5.9) 1/8″ NPT male 1.14 (29) 0.811 (23) Material: All-metal, electro-less nickel-plated brass fitting Available Suspension Assemblies with Fittings Suspension Assembly Group The combination of these fittings are required to connect the HS18 fitting to the listed suspensions HS18-18F HS18-14F Available Vacuum Suction Cups that use Fitting No. HS18 The HS18 Group 3 Fitting can be used with many different Vacuum Suction Cups (too many to list here). Click this page of cups Larger Cups (21 mm – 165 mm) and look for this image for available cups: