This variety of Universal Joint piston rod adapto is also known as swing universal floating joint for pneumatic air cylinders, is a typical sort pneumatic air cylinder accessories, have thread M4 ,M5 ,M6, can be used to mount the pneumatic air cylinders directly Features: (1) To mounting pneumatic air cylinders ; (2) Size M8*1.25, M10*1.25, M12*1.25 Package includes: 1. 3pcs * floating joints