Simple spool holder to fit bigger 3kg spools, basically the stock spool holder extended. It will bend a little bit when a full 3kg spool is on it, this is normal. You can also fit 2 1kg spools on it.
I have used this for ~2 years, there is wear and tear but I think it will hold up for many years to come.
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The author marked this model as their own original creation.