ANVER Vacuum Cups and Suction Cups Vacuum Cup Fittings – Group 2 Part Number: HS6 Vacuum Fitting Part No. Thru Hole Diameter in. (mm) Connection Thread Size H Height in. (mm) Item Weight oz. (grams) HS6 0.13 (3.3) M6 (6mm) male 0.79 (20) 0.265 (7.5) 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 HS6 fitting to the listed suspensions HS6-18F HS6-14F Available Vacuum Suction Cups that use Fitting No. HS6 The HS6 Group 2 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: