SDA is compact type cylinder
-32 refers to the cylinder diameter (inside the cylinder diameter size);
-the 20 and 50 respectively represent the stroke of the cylinder, which means one stroke 20 and the other stroke 50

SDA is compact type cylinder
-32 refers to the cylinder diameter (inside the cylinder diameter size);
-the 20 and 50 respectively represent the stroke of the cylinder, which means one stroke 20 and the other stroke 50
