Only use to steel grit what else is as good.aluminum oxide Is it similar on price and reusabilty will be blasting everything from truck bodies to tractors.
Garnet is a good.
It's a fair bit tougher than jblast and the like but it's not like steel grit.
You will only get a few goes out of it before you will need to change it out and it is more expensive so might work out the same price.
You would want something a bit finer if you are doing truck and tractor bodies.