CAP OSR6IS-100 Weight Plates
- Plate
- 100
- Cast Iron, Rubber
- Black
- More reviewed than 96%
Rubber-coated cast iron plates weighing in at 52.5 pounds per the listed spec, quieter on the drop than bare iron equivalents.
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How it ranks among the 114 plates we track
4.4★ across 2,773 Amazon ratings, Bayesian-smoothed toward the category average.
2,773 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
3,000+ bought on Amazon last month.
Brand identity, imagery, description and spec coverage.
The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 114 plates we track - how the scorecard works · full plates data report. Confidence: high - strong rating volume and complete data.Last refreshed Aug 4, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
Rubber-coated cast iron gives these CAP weight plates a quieter drop than bare iron, with a listed item weight of 52.5 pounds in black, suited to barbell or plate-loaded machine use.
The rubber coating over a cast iron core is the usual approach for reducing noise and floor damage compared with bare iron plates, and it typically also cuts down on chipping if plates are dropped.
- 52.5 pounds item weight
- Cast iron core with rubber coating
- Black finish
- Rated 4.4 stars, about 3,000 bought in the past month
Who it's for
Suits lifters adding plate weight to a barbell or plate-loaded machine who want a quieter, floor-friendly option over bare cast iron. Not the choice for anyone needing an exact plate-by-plate breakdown confirmed up front.
Strengths and trade-offs
Drawn from this product's published specifications.
- Rubber coating reduces noise and floor damage
- Cast iron core keeps a dense, compact plate
- Exact plate breakdown is not specified in the data available here
- Rubber coating may wear at the edges over time
Performance notes
Rubber coating over cast iron cuts impact noise and floor marking versus bare iron, while the cast core keeps the plates compact for their weight.
Specifications
| Brand | CAP |
|---|---|
| Model | OSR6IS-100 |
| Pieces | 100 |
| Material | Cast Iron, Rubber |
| Color | Black |
| Item Weight | 52.5 pounds |
Other CAP plates
How it compares
This product against the closest alternatives we track in plates.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| CAP OSR6IS-100 Weight PlatesThis product | 4.4 / 5 | 2,773 | 4.4 / 5 |
| RitFit Weight Plates for BarbellRITFIT | 4.8 / 5 | 1,565 | 4.4 / 5 |
| EVERYMATE 1.25LB Change Plates Set Weight PlatesEVERYMATE | 4.8 / 5 | 1,448 | 4.4 / 5 |
| JFIT 20-6650-pr Weight PlatesJFIT | 4.7 / 5 | 777 | 4.3 / 5 |
| Yes4All R61J Weight PlatesYES4ALL | 4.8 / 5 | 605 | 4.3 / 5 |
Similar plates from other brands
Questions about the CAP OSR6IS-100
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
What are CAP OSR6IS-100 plates made of?
Cast iron with a rubber coating.
What color are they?
Black.
How much do they weigh?
The listed item weight is 52.5 pounds.