Good for showing anything between a hose and a metal nipple, especially coolant hoses as they are larger. The shape allows you to work this spacer around the entire perimeter of the nipple/hose to break the seal so it can be easily removed later. It did not in any way damage the hoses I used it on, it was a Porsche Cayenne. The only problem is not to scratch the OD of the nipple too much with the tip of the tool. This happened to me and I had to sand to make it smooth again. I'll try to sand the point to make it as smooth as possible. Not sure if this will work, but will continue to use it anyway, albeit with more caution.
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