It fits perfectly with your existing set of dumbbells and is ideal for those who want to challenge themselves with heavier weights.
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It will NOT work with older Bowflex 552 Series 1 Dumbbells. Series 1 Dumbbells have grey safety bars across the top. (See pictures).
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With just the turn of a dial you can automatically change your resistance from 5 lbs. all the way up to 52.5 lbs of weight. No more picking up 30 different dumbbells to get the results you want, this adjustable dumbbell replaces 15 sets of weights!
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These parts will NOT work with the Bowflex SelectTech 552 series 2. The difference between the two is the series 1 have a gray tab and the series 2 have a red tab. Each order includes only one item with the exception of the the springs/bearings (two each included).
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Made from durable PETG material, this disc ensures long-lasting performance. Compatible with Nautilus/Bowflex SelectTech 552 Adjustable Dumbbells Series 2 ONLY. Series 2 dumbbells can be identified by the white numbers on the outside weight dial, while Series 1 dumbbells have red numbers on the outside weight dial.
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