ANVER Vacuum Cups and Suction Cups Model: Universal U4-SIT/FITTING Part Number: A-3150059S ANVER and P-Series Description and Part No. Connection Thread Size Static Diameter* Compressed Diameter* Static Height* Compressed Height* Load Capacity at 24 in. Hg (609.6mm Hg) [2:1 Safety Factor] Pull-Off Capacity at 27 in. Hg (685.8mm Hg) [1:1 Safety Factor] Level Compensator Suspensions (Click Image for More Info) U4-SIT/FITTING (Translucent Silicone) A-3150059S 31.50.059S U4.20.01AB M5 Male 0.21 in. (5.2 mm) 0.22 in. (5.5 mm) N/A N/A 59 grams 0.29 lbs (0.13 Kg)