The Generation 2 cylinders have 2 inputs (and come in studded, studless, and small versions), and allow pushing and pulling, depending on which input air is pumped into.
The Generation 2 cylinders have 2 inputs (and come in studded). The Generation 2 cylinders have 2 inputs (and come in studless). The Generation 2 cylinders have 2 inputs (and come in small versions). Allow pushing and pulling. This was depending on which input air is pumped into.