Fits perfectly over the stove, just thought I'd mention it. I've had a Svea 123R for a few years now but never had the little aluminium cup that comes with it., I got one of those one litre Primus Eta pots with the heat exchanger fins on the bottom which is great but always wanted a cup as well. I think I saw on here that someone else had got one of the GSI cup things (CLICKY HERE) for the one I bought. on their Svea and only this weekend I finally got one, it fits over the stove and it and the stove fit in the Primus pot as well. Err, that's all.