Ultra Power - Ultra Compact - Ultra Reliable Ingersoll Rand 35MAX 1/2” & 15QMAX 3/8” Ultra-Compact Impactools™ Introducing the Ingersoll Rand 35MAX Ultra-compact Impactool™. Built on Ingersoll Rand’s 100 year legacy developing industry leading tools, you can always rely on the 35MAX. This tool has been rigorously tested, beaten up, dropped and pushed to the limits to make sure it lasts twice as long as the competition.