This disc will only work on the Series 2 (will not work on Series 1) of the 552 model and is an original authentic Bowflex product and not 3D printed.
OEM Bowflex 552 SERIES 2 Disc 3 SelectTech Dumbbell Replacement Part (NOT 3D)
OEM Bowflex 552 SERIES 2 SelectTech Dumbbells Replacement Guard Handle Tab Part
(2) OEM Bowflex 552 Series 2 Dumbbell Replacement Weight Selector Handle Part
OEM Bowflex 552 Series 2 Only Dumbbell Replacement Disc Set (#4, #5) NOT 3D
