Finish the following sentence with the best choice: How to drill holes into your bike gear?

Choices:
- Take your bike gear pieces and drill a hole into both sides of the piece. Chisel down the edges.
- Take your bike gear pieces and drill a hole into both sides of the piece. Hammer down the edges.

Answer:
Take your bike gear pieces and drill a hole into both sides of the piece. Chisel down the edges.