Double CO2 Holder for Mountain Bike Now re booted. http://www.thingiverse.com/thing:1010642 This was one of the first 3D models I made, since then I've had a lot of practice and moved away from sketch up to some more serious software. Sorry to those that struggled with the the original file. I couldn't find one to fit some bottle cage mounts so I made one that would act as a rock deflector as well. It's been on my bike over a months so seems sturdy enough. Fits 16gm CO2 Canisters. Push in then Screw canisters up. Can be secured with elastic band as well. Hole is to help push out. I printed at 50% fill. If you improve it (it's my first upload) could you let me know so I can try it too?