We no longer carry MakerBot Replicator Tough PLA Bundle - 3-pack - slate gray - PLA filament (4305398), but we found this replacement for you.
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The MakerBot Tough Smart Extruder+ delivers dependable, consistent performance with superior results using the MakerBot Tough Filament. This device has a magnetic swapping functionality for easy maintenance and material switching. Its active jam prevention protects the extruder and the prints while the filament detection pauses printing and notifies users if a spool runs out. This extruder is designed for the MakerBot Replicator and Replicator+ 3D printers.