Looking for a High Speed Quoin Key - New or Used

http://www.gaec.biz/
Graphic Arts Equipment in the northern Chicago suburbs. I have bought quoins, gauge pins and reglets from them and I think they sell furniture too.

Fritz at NA Graphics (NAGraph.com) has what you want

LD

http://www.americanprintingequipment.com/hi-speedquoins.aspx

Or if you have oversize allen key you can file/grind the end square.