Compatibility: BowFlex SelectTech 552 Series 2 Adjustable Dumbbells. Precision Fit: Engineered to perfectly replace or upgrade your BowFlex SelectTech 552 𝐒𝐞𝐫𝐢𝐞𝐬 𝟐 discs. These discs are designed to fit authentic BowFlex SelectTech Dumbbells only.
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