Product Feature: 1. Exhaust outlet locates over the body, which is convenient to install muffler to decrease noise and pollution. 2. The external force required by direction-change of series of M5B, M5R and M5L is provided by external mechanism, which can be used for position test or [stroke switch] limit switch. 3. M5C,M5D,M5Y,M5PF,M5PM,M5PP,M5PL and M5HS [...]