ANVER Vacuum Cups and Suction Cups Model: Multiple Bellows BL20-SIT Part Number: A-3150110S ANVER and P-Series Description and Part No. Flared Overall Dia. Static Diameter* Compressed Diameter* Static Height* Compressed Height* Load Capacity* at 18 in. Hg (457mm Hg) [2:1 Safety Factor] Pull-Off Capacity at 18 in. Hg (457mm Hg) [1:1 Safety Factor] Fitting Group (Click Image for More Info) Level Compensator Suspensions (Click Image for More Info) BL20-SIT (Translucent Silicone) A-3150110S 31.50.110S BL20-2.20 0.82 in. (20.8 mm) 0.78 in. (20.0 mm) 0.82 in. (21 mm) 0.91 in. (23.0 mm) 0.4 in. (10.2 mm) 0.7 lbs (0.32 Kg) 1.6 lbs (0.7 Kg)