This was just what I needed. I have a spool of Ninjaflex that despite being .5 KG is wider than 1 KG rolls. This gave me the extra length needed to securely hold the spool. Printed it laying down in same orientation it will be used. Tree supports. Duramic PLA+. I had to stretch out the metal spool holder just a tad to get it to snap into place. Once it snaps in it's quite snug and feels secure. Thank you for the model.