They re-sleeve high pressure and valve ports. They also do general and hypro heads. I think they also have ability to sleeve large
cat pumps. I recently sent them a cat 3535 that was a basket case, it had a cracked crankcase from connecting rod problem. They were able to weld crankcase and it is still running. I usually would have just tossed that pump and bought a new one but the repair saved me alot of money. I also buy foam brush heads from them, they are their own brand. Great company to work with.