Welcome , not absolutly sure , but i think they're made in Germany . May work OK , but probably somewhat proprietary ( have to use their stuff only ) So IMO , your better off sticking to something more common , and with a 510 connection . That way you can get atty's and carto's from anyone . If you find a stateside vendor , carrying them , and is willing to back them up , then give it a go . If only available from an oversea's vendor , I would take a pass . Good Luck , with whatever you decide .