1. Maximum mass reduction of 15% 2. Air buffer is easy to adjust 3. Everything from small magnetic switches to strong magnetic field resistant magnetic switches can be installed 4. The models of rod end mounting parts and swing base mounting parts are set (saving the time of ordering cylinders and supports separately) 5. With magnetic switch (CDA2 series: CDA2, CDA2W, CDA2K, CDA2KW, CDBA2, CDA□H, CDA2W□H, CDA2□Q)