ANVER Vacuum Cups and Suction CupsModel: P-300 CUP & FITTINGPart Number: A-3350049 ANVER and P-Series Description and Part No. Connection Thread Size Diameter in. (mm) Height in. (mm) Load Capacity at 24 in. Hg (609.6mm Hg)[2:1 Safety Factor] lb (kg) P-300 CUP & FITTING (Ethylene-Propylene)A-3350049 33.50.049 P300.50.30UA G 3/4″ Female 12.40 (315.0) 1.34 (34.0) 600 (272.2)