A new/unused item complete with hangtag. $75 plus shipping.
The distance between the buckle and the holes varies from 38-48". Seems like a high quality item, but a brief google search did not turn up much about the maker, "Holland Sport U.S.A."
Sorry for the poor quality photo, but you get the drift.
Cartridges in the 30-06 family fit the cartridge slots well, so I assume that medium size belted magnum cases would as well. Cartridges that resemble cigar tubes probably not so much. Ten cartridge slots.
Hand clamp not included.