This fits the Clas Ohlson 44-1371 dryer, model "SBL-1215". You remove the plastic cover plate over the hot air exhaust and replace it with the spool holder base, using the original screws.
The base have some modeled in supports that you will need to remove under the screw holdes.
The spool holder in the files is 51.2mm outside and should fit most spools.
I printed my own (on the picture) 50mm and had to add some electrical tape to get a nice fit.
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