Pneumatic hand tool

A pneumatic hand tool, comprising:

• a housing including a handgrip and a holding portion connected to the handgrip, the handgrip including an airflow passage to receive driving airflow, the holding portion including a housing chamber to house the pneumatic motor and the airflow regulation valve, the holding portion including a first wall opposing the handgrip and a flow channeling chamber integrally extended from the first wall towards the housing chamber;
• a pneumatic motor located in the housing chamber of the housing;
• and
• an airflow regulation valve to control spinning direction of the pneumatic motor, the airflow regulation valve located in the housing chamber of the housing;
• wherein the flow channeling chamber includes a first directing vent formed on the first wall and communicated with the airflow passage to receive the driving airflow and a second directing vent communicated with the airflow regulation valve to output the driving airflow to the airflow regulation valve to drive the pneumatic motor spinning.