The "Busch & Müller LUMOTEC IQ Cyo sense plus" is a quite good and expensive bicycle LED lamp. If you don't want to throw it away just because its mount is broken: my 3D printed mount will help :-). I also add the Rhino File (.3dm) and an export from Rhino for AutoCad (.dwg), so you maybe can make it fit for other lamps too.I print this with an infill of 50% to make it quite stable. One print before I had only used 30% and it broke, when the bike fall down once....