ROHN FRM238 Non-Penetrating Roof Mount with 2.38" OD x 0.154" Wall x 30" Mast

I bought this, along with its associated friction pad, to semi-permanently mount a 120 cm satellite dish on a concrete pad next to my garage without having to drill holes or pour new concrete. It assembled easily and does its job nicely. With products like this I'm always concerned that sloppy tolerances might mean things won't quite fit in a variety of ways, but the way this is built you pretty much can't go wrong. The instructions are minimal, but you could pretty easily figure out how to assemble it without instructions. The 8 concrete blocks I used as ballast fit perfectly within the space provided and I can't imagine this thing moving even in the heaviest winds. The tube that the dish mounts to has thick walls, too, so strength isn't an issue and it won't be crushed by clamping forces.