The difference between the series is the Series 1 handle has the word Bowflex written on a gray piece and the Series 2 the word Bowflex is written on a red piece.
Genuine Bowflex SelectTech 552 Dumbbell Stand w Media Rack Easy Assembly
Bowflex selecttech 552 Dumbbell cradle Stand *new* Holder Only No Weights
SERIES 1 ONLY - Nautilus Bowflex SelectTech 552 Dumbbell Replacement Cradle Base
Genuine Bowflex SelectTech 552 Dumbbell Stand Media Rack Easy Assembly NO STRAP
USED SERIES 2 ONLY Bowflex SelectTech 552 Dumbbell Replacement Handle Parts Disc
