Well I think it is. Try it out and see for your self. The diameter is about 2 3/8" or 58.35 mm. The with 3/4" or 19.05 mm. Spool rim thickness is about .089" or 2.25 mm. The print came out very well on my Prusa I3 Dual Extuder. Created with Design Spark Mechanical http://www.rs-online.com/designspark/electronics/eng/page/mechanical Hope you like. Have a Great day! :-) P.S. Photos are from a test print that is smaller than what i had publish.