Sprung wire management clips for 2020 profile

This is a re-modelling of the wire clips I found on thingiverse (https://www.thingiverse.com/thing:2491249).

I set out to make 3 sizes instead of one and I've reshaped the clipping part to get a much tighter fit against the Ender 2020 extrusions.

• the part that sets on the outside of the extrusion has been reshaped to be a 45 degree slope;
• the length of the narrowest part of the spring has been shortened;
• I've created 2 more clips with different inner diameters - 11mm [close to original], 8.5mm, 6.2mm;

Prints fine at 0.20mm but looks tidier at 0.16mm. Infill isn't very important as long as walls are relatively thick. Print sideways to avoid having to use supports.