Aluminium Window Rollers - Small

This is another one of those things where having a 3d Printer at home is just awesome...

We had the problems with these wheels wearing down recently, so I took it apart and copied the wheel. The dimensions of the wheel are the following:
- Wheel axle: 5mm
- Wheel outer size: 16.6mm
- Wheel inner size: 14mm

Now it should just be a case of pulling out the whole wheel, change the actuall wheel over and then replace - Repeat 48 odd more times... :(

Hope this also helps someone else..