Using the Makita LE400MP Shaft Extension is easy. First, make sure you have a compatible Makita Couple Shaft Power Head (sold separately). Attach the extension to the power head quickly. Once attached, you're ready to reach those hard - to - reach branches and shrubs in your landscaping work. When using it, hold the tool firmly to ensure safety. After each use, clean the attachment to remove any dirt or debris. Check the steel drive shaft regularly for any signs of wear or damage. If you notice excessive vibration, it might be a sign that something needs to be checked. Store the attachment in a dry place to prevent rusting. This will help keep your Makita LE400MP in good condition for a long time.