
I bought this tool because I knew that changing spark plugs, normally a simple job, would be difficult and I wanted the right tool for the job. I have a Subaru Impreza WRX STi and the boxer engine design makes changing the spark plugs a daunting task, at least for me. However, after reading that others were talking about the Design Spak dual swivel bushing that helps with this task, I decided to buy it. I can tell you that this tool paid for itself after the first use! This tool was VERY helpful in this task. If you need to change spark plugs in a confined space, you won't regret having this tool in your pocket at all times!

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