This disc will only work on the Series 1 ( will not work on Series 2) of the 552 model and is an original authentic Bowflex product and not 3D printed. Will also work on the Nautilus version of the Series 1 552 SelectTech Dumbbells.
SERIES 1 ONLY - Bowflex Nautilus 552 Dumbbells Replacement Handle Parts Discs
Bowflex Nautilus 552 SERIES 1 Grip SelectTech Dumbbell Replacement Handle Part
