The file 'Brompton Innertube Holder For Different Hinge Type 3D Printer Model' is (stl) file type, size is 9.4KB.
Unfortunately original Brompton innertube holder was not working with my standard steel frame hinge. So I tweaked it here and there. Added small claws so it will not pop out and get lost deep in the frame tube.
1.stl | 43.8KB |