This is a truly painless piece of safety gear! It doesn’t slow production or impede progress, nice! I’m using this on my reciprocating saw, and on my router as well. This product is pure genius! I love the fact that the Power Safe guard doesn’t take up valuable storage space, even when left installed on my tools. I’ve had to stop work, to search for a co-worker’s lost fingers, and it’s not something I ever want to do again- Thank you, Jeff!