The Finish Thompson Air Driven Motors are lightweight and easy to handle. Even with their smaller size and lighter weight, these motors can pack a powerful punch! To operate any of the air driven motors, you'll need to supply an air source to motor wherever you're going to install it. If you're wanting to adjust the speed of the motor, make sure you have a control valve installed in your air line so you can control how much air pressure is running in to the motor. Each motor is shipped with a control valve and a muffler to help quiet operation.