Using these Domel carbon brushes is easy. First, make sure your vacuum cleaner is unplugged for safety. Remove the old brushes from your 145mm FloThru vacuum cleaner motor. Then, carefully insert the new brushes into the brush holders. Ensure they fit snugly and the spade terminal is properly connected. When using your vacuum cleaner, keep an eye on the performance. If you notice any strange noises or a decrease in suction power, it might be time to check the brushes. For maintenance, it's a good idea to clean the motor and the brush area regularly to prevent dust and debris buildup. Also, store the brushes in a dry place when not in use. And remember, these brushes are a great choice for your Domel 240VAC 145mm motor, but they might also work with other generic motors.