CAP Barbell Standard 1-Inch Grip Weight Plates
- Item Weight: 10 pounds
- Material: Cast Iron
- Color: Black
- Number Of Items: 4
Last refreshed Aug 4, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A straightforward cast iron plate for rounding out a home set, worth confirming against your bar's bore size before ordering.
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ASIN: B0BJSPQYM1Category: Weight Plates
Overview
Cast iron and finished in black, the CAP RWPBIS-010B is a standard weight plate listed at 10 pounds with 4 pieces per pack, built to load barbells and dumbbell handles in CAP's standard plate line.
Cast iron is the traditional standard-plate material, prized for density and shelf life over rubber-coated alternatives, though it chips floors and clangs more than a coated plate. The pack count of 4 suggests this ships as a set rather than a single disc, so confirm whether that means two pairs or four separate plates before matching it to a bar.
- Cast iron construction
- 10 pound item weight
- Black finish
- 4 pieces per pack
Who it's for
Home lifters filling out a standard weight set who already own a standard bar or dumbbell handles. Not for anyone who needs Olympic bore plates or wants rubber coating to protect flooring.
Pros and cons
- Cast iron holds up over years of regular use
- Uniform black finish across the set
- No bore size stated, confirm bar fit before buying
- Bare metal can damage floors without a mat
Performance notes
Cast iron plates hold their shape indefinitely and do not degrade the way rubber coatings can, but bare metal marks floors and rack surfaces without a mat underneath, and the exposed edges chip paint on contact.
Specifications
| Brand | CAP Barbell |
|---|---|
| Dimensions & fit | |
| Item Weight | 10 poundslower than 55% of 100 weight plates |
| Construction & materials | |
| Material | Cast Iron |
| Color | Black |
| Included components | |
| Unit Count | 4 |
| Other details | |
| Number Of Items | 4 |
| Part Number | RWPBIS-010B |
Closest rivals on specs
Frequently asked questions
What is the CAP RWPBIS-010B made of?
Cast iron, per the listed spec sheet.
How many plates come in the RWPBIS-010B pack?
The listing shows 4 pieces per pack.