CAP Barbell Rubber HEX Dumbbell Set 550-Pound

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CAP Barbell SDRS-550R
CAP Barbell sdrs 550r
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5-50 lbs
5 lbs

30 days

The main downside of fixed-weight dumbbells is that they take more storage space than adjustable dumbbells. However, a rack with a vertical design can solve this problem at least partially. CAP Barbell actually offers several sets of hex dumbbells, but the SDRS-550R one actually comes with quite a sleek, 4-sided rack, which not only takes care of the storage problem, it also looks smashing.

Technical Details and Specifications

  • Rack dimensions: 23.6L x 23.6W x 37.4H inches (60L x 60W x 95H cm)
  • Weight range: 5-50 lbs (2.26 kg – 22.6 kg)
  • Weight increments: 5 lbs (2.26 kg)
  • Warranty: 30 days

Dumbbells construction and weight increments

The fixed-weight dumbbells included in this CAP Barbell set are the hexagonal type. Their weight heads are made of cast iron. They’re rubber-coated, aspect that comes with various advantages. First of all, not only that hex dumbbells won’t roll over when placed on the CAP Barbell sdrs-550r - hex dumbbellfloor, they also won’t slide over during exercises such as push-ups, as the rubber actually provides an excellent grip to the floor. Of course, the rubber coating keeps rust away, but also provides a little bit of cushioning for the weights, protecting floors from scratches or nicks.

The weight heads are precision screwed onto the bars, and also pinned and pressed. Therefore, detaching them isn’t exactly an easy task. Due to this fact, the dumbbells offer superior sturdiness. The weights won’t rattle or wobble on their axles during exercises, like certain adjustable dumbbells.

These hex dumbbells feature contoured handles, with a knurled surface and a chrome finish. Evidently, the chrome finish offers rust resistance, while the knurling supplies a secure grip. The knurling surface is far from being sharp, and should not cause any damage to the user’s hands.

The set includes 10 pairs of hex rubber dumbbells, with a weight range between 5 and 50 lbs (2.26 – 22.6 kg). The weight increments are: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50 lbs (2.26, 4.5, 6.8, 9, 11.3, 13.6, 15.8, 18.1, 20.4, 22.6 kg), with a total weight of 550 lbs (250 kg). Differently put, this is a dumbbell set for users of all levels. Even though an advanced user may require much heavier dumbbells than the 50 lbs one supplied with this set, they still may need lighter dumbbells for a variety of exercises.

Rack construction

The rack supplied with the SDRS-550R dumbbell set features quite a space-saving design. sdrs 550r cap barbell - 4-sided rackFirst of all, it takes only 23.6″ x 23.6″ (60 x 60 cm) of floor space, which means it should fit with no problem even in a smaller room.

The rack is actually build to hold 750 lbs (340 kg) of weight. Evidently it’s extremely sturdy, also coated with anti-corrosive paint. It features four sides, two of them meant to hold the dumbbells from 5 to 30 lbs, and the other two, the 35-50 lbs ones. In other words, you’ll have two sides with 6 dumbbells each, and 2 sides with 4 dumbbells each. In case you’re wondering, the rack doesn’t rotate.

The assembly of the rack is far from being difficult. Shouldn’t take more than 15 min. Also, the tools for it are supplied. No other accessories are supplied with this set.

The Pros

  • Sturdy and reliable hex dumbbells;
  • Cast iron weight heads, with rubber coating to prevent rust, and protect your floors;
  • Knurled and contoured handles for maximum comfort;
  • Chrome finish on the handles to keep rust away;
  • No adjustments required, you simply pick-up the set you need for your exercise;
  • 10 sets of dumbbells, with a weight range between 5-50 lbs, with increments of 5 lbs, great for users of all levels;
  • Extremely sturdy, space-saving rack with a sleek design, which can actually hold 750 lbs of weight;
  • Rack is easy to assemble.cap barbell set plus rack - 550 lbs

The Cons

  • Rubber coating on dumbbells may emanate a faint odor for a while, which can be an inconvenience.


The CAP Barbell SDRS-550R includes 10 pairs of fixed-weight, hex dumbbells, with a weight range between 5-50 lbs, and a space-saving rack. The dumbbells feature rubberized weight heads, and ergo handles for maximum comfort. The rack features a sleek, 4-sided design, offering excellent support and means to keep your weights organized. The whole set is not exactly cheap, but considering that everything supplied is made to last a lifetime, and the dumbbells alone weigh 550 lbs, the value matches the price.

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