Feature●This item includes 1 x Air Brake Chamber ? BC-3030LS●Actuator Type Size: 3030 Standard Long Stroke●Stroke Type: Standard●Available Stroke: 3", 76mm●Length from mounting bracket to the end of Spring Housing: 9.9", 251mm●Length of Piggyback: 7.4", 188mm●Dimension at rolled Spring Housing flange: 8.3", 211mmDescription