Large and small knobs to suit M4 & M5 sizes. Use with a hex head bolt or nut.

Prints with support, can also print without support but will need cleaning up.

Remove rubbish and insert nut or bolt. 

Then snap a cap over to finish. A drop of superglue will help, but the caps are secure as is. Use the same cap without the hole for all four knob sizes.

See my other listing for M6 & M8 knobs.