CAP OSR6IS-100 vs CAP OPR6IS-045 Weight Plates
Both the CAP OSR6IS-100 and the CAP OPR6IS-045 are rubber-coated weight plate sets built for home gym use, but they differ in price, total weight, and piece count. The CAP OSR6IS-100 is a 100-piece set with a total item weight of 52.5 pounds, priced at $99.99, with a 4.4-star rating from 2,773 reviews and roughly 3,000 monthly buyers. The CAP OPR6IS-045 totals 45 pounds and sells for $46.99, earning a 4.5-star average from 3,975 reviews with around 2,000 monthly buyers. Choosing between them comes down to how many plates you need and what you are willing to spend.
Quick winner
For most home gym owners, the CAP OPR6IS-045 at $46.99 is the sharper buy: it carries a higher 4.5-star rating, more total reviews (3,975), and a lower price than the CAP OSR6IS-100. Choose the CAP OSR6IS-100 if you specifically need a 100-piece set and want more loading increments in a single purchase.
Key differences, measured
- The CAP OPR6IS-045 is 53% cheaper ($46.99 vs $99.99).
Side-by-side specs
| Spec | CAP OSR6IS-100 Weight Plates | CAP OPR6IS-045 Weight Plates |
|---|---|---|
| Price | $99.99 | $46.99 |
| Rating | ||
| Material | Cast Iron, Rubber | Alloy Steel, Rubber |
| Weight | 52.5 Pounds | 45 Pounds |
| Color | Black | Black |
The two contenders
CAP OSR6IS-100 Weight Plates
The CAP OSR6IS-100 is a 100-piece rubber-and-cast-iron weight plate set with a total item weight of 52.5 pounds, sold at $99.99. It holds a 4.4-star rating from 2,773 verified buyers and moved about 3,000 units last month. The rubber coating helps protect floors and reduces noise. The 100-piece count suits lifters who want fine incremental loading or need to outfit a barbell with a wide range of plate combinations.
Buy this if: Buy the CAP OSR6IS-100 if you want a high piece count in one purchase and plan to dial in loading increments with many small plates. At $99.99 for 100 pieces and 52.5 pounds of cast iron with rubber coating, it suits a dedicated home gym where you need flexibility across multiple loading combinations.
Check price on AmazonCAP OPR6IS-045 Weight Plates
The CAP OPR6IS-045 is a rubber-coated alloy steel weight plate set totaling 45 pounds, priced at $46.99. It earns a 4.5-star rating from 3,975 reviews with roughly 2,000 monthly buyers. The alloy steel construction and rubber coating make it a compact, floor-friendly option for lifters who want to add weight to a standard or Olympic bar without buying a large multi-piece kit.
Buy this if: Buy the CAP OPR6IS-045 if you want a straightforward, lower-cost set with a strong buyer track record. At $46.99 for 45 pounds of alloy steel with rubber coating and a 4.5-star average from nearly 4,000 reviews, it is the practical pick for lifters adding weight to an existing bar or starting a home gym on a budget.
Check price on AmazonFrequently asked questions
What materials are used in the CAP OSR6IS-100 versus the CAP OPR6IS-045?
The CAP OSR6IS-100 is made from cast iron with a rubber coating. The CAP OPR6IS-045 uses alloy steel with a rubber coating. Both have rubber exteriors to help protect flooring and dampen impact noise.
How much does each set weigh in total?
The CAP OSR6IS-100 has a listed item weight of 52.5 pounds across 100 pieces. The CAP OPR6IS-045 has a listed item weight of 45 pounds.
Which set has more reviews and a higher rating?
The CAP OPR6IS-045 leads on both counts, with 3,975 reviews and a 4.5-star average versus 2,773 reviews and a 4.4-star average for the CAP OSR6IS-100.
How do the two sets compare on price?
The CAP OSR6IS-100 is priced at $99.99 for a 100-piece, 52.5-pound set. The CAP OPR6IS-045 costs $46.99 for a 45-pound set. The OPR6IS-045 is the lower-cost option by a significant margin.
Does Gymso earn a commission on these products?
Yes. Gymso is an Amazon Associate and earns from qualifying purchases. This does not affect our comparison. We rank products using verified buyer data, published specs, and review counts, not commission rates. We research specs and verified owner feedback; we do not lab-test.