Very good product. The runout was below the maximum they stated, even when fully retracted. I have bought this HHIP and another that is commonly sold at Revain and it has been much better. I bought a small HHIP cartridge and installed it with no problems and no additional TIR. I've run it up to 4000rpm and it runs as smooth as it gets. If you need delicate drill chucks, this is for you.