1. Make sure the draining board, sink and plug hole are regularly disinfected.

2. Machining the spark plug hole and counter bore at a compound angle.

3. Install a 14 mm (1/2 inch) (thread size) air hose adaptor in the spark plug hole.

4. Lola:Maybe you would have to help me shoo a few down the plug hole?shoo, shoo, shoo!

5. And the holder front board and the back board forms the through crane gear plug hole separately.