Hasselblad lens tripod ring mount

I am looking for a lens tripod mount for my 140 to 280 zoom. This lens is heavy and I fear the weight may damage the lens to body interface. This lens had a tripod mount as a accessory but I didn't get it with the lens. The lens diameter is almost 3 inches,(2.965 inches). I feel a 3 inch diameter clamp should work.

There are an abundance of tripod lens mounts available but the don't list the inner diameter. Only the lens brand it' s associated with is listed. Can anyone help me out with this?

Thanks

Jim