I have a small table top cutter. There is a little thing that sits on the table behind the cutter to hold the roll of vinyl (see attached). The one I have is old, brittle, breaking and has been "MacGuyvered" too many times to count. I need a new one, but I don't even know what it's called to search for it. Anyone have any idea what it's called, or better yet, who sells them? Thanks in advance, and sorry if this is a nimrod question and I should know this.