Review on 💪 Ingersoll Rand 307B Air Grinder: Powerful and Precision Grinding Tool by Andy Mitts

The Ingersol 307B Straight Air Die Grinder is much more compact than I expected. Its physical size is as small or even smaller than my Dremmel tool. I bought this tool to fit an aluminum intake manifold to a set of cylinder heads and found this tool to be the perfect choice (very small, light and 28k rpm). The machine comes with two collets, the larger one fits standard 1/4" diameter tool shanks and the other (included in the bag) is marked 6mm. Two flat keys are provided to tighten the bits in the collets. You must install an air fitting (sold separately) that mates with the air hose connector. This tool is very well made and should last a lifetime with proper care. Quality tools help me do my best work.