Commercial grade pipe clamps that are 3"_75 victaulic. I've replaced the rubber gasket, was brand new rubber gaskets and cleaned up the bolts. If interested let me know. I am selling them for $20 a piece. I know that they go for about $60 a piece brand new. however these are not brand new. They have been used. like I said I am replacing the gaskets and cleaning up the bolts Cash Only 23 in total. OBO.