I work at a Harley dealership and when I realized the tools in the shop weren't enough I looked online. I found some very cheap tools that may have worked, but I'm familiar with the over-the-counter brand as we've been using their tools for many years. It was so easy. I was standing at the service desk when I ordered this from my phone. Prime delivered it the next day and it was only on my lift for a day. So if you're using aftermarket valve springs and bushings on your new M8, consider this tool. Works better than saving original tool.