These edges of these cardboard spools are bent or dented so will not roll smoothly on a roller type spool holder like in a Bambu AMS (AMS Lite should be OK)
If your printer uses a holder that hangs the spool from the centre hole they will work fine.
Shipping discounts - 4 spools gets $4 off shipping, 5 gets $5, 6 gets $6, 10 gets $10, 12 gets $12, +
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These edges of these cardboard spools are bent or dented so will not roll smoothly on a roller type spool holder like in a Bambu AMS (AMS Lite should be OK)
If your printer uses a holder that hangs the spool from the centre hole they will work fine.