These are spools left over from changing colors during production.
Colors will vary.
Tolerances are typically +-0.025mm, but could go up to +-0.05mm
Resin: ABS
Extrusion Temp: 245c@65mm/s
Flow Rate: 30 - 65mm/s
Bed Temp: 90c - 100c (with PEI / Ultem, or Glass with Hairspray or Glue Stick)
Diameter: 1.75mm