YRMJ Heavy Duty Spring Clamps 4-1/4" 2 Pack
- 2 clamps in the pack
- 4-1/4 inch spring clamps
- 2.17 inch fastener capacity
- Alloy steel, black finish
- 0.19 kg listed weight
Last refreshed Aug 4, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A pair of black alloy steel spring clamps for light holding jobs at the bench. Jaw pad material and clamping force are not described.
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ASIN: B0C65D1HHGCategory: Clamps
Overview
Not a screw clamp, this YRMJ pair closes its jaws with spring tension and holds whatever is placed between them. Each one is a spring clamp in black alloy steel, sold two to a pack.
The reason to look is quick holding of small work at a fixed jaw capacity. What is missing is detail: clamping force, jaw pads and handle coating are all unmentioned.
Who it's for
Hobbyists and DIY users who hold small workpieces, glue-ups or fixtures during a short job get a pair at a fixed capacity. Large stock or work needing a rated grip calls for bar or screw clamps.
Pros and cons
- Two clamps in one pack
- Alloy steel construction
- Spring action closes without screwing
- Jaw capacity clearly stated
- Clamping force not rated
- Small jaw capacity limits stock size
- Only two clamps per pack
Performance notes
Spring tension sets the grip, and a stronger spring holds harder but takes more squeeze to open. Capacity is fixed by the jaw opening, so thicker stock will not fit. Jaw pads are not described, so soft material may need protection from bare metal.
Specifications
| Brand | YRMJ |
|---|---|
| Dimensions & fit | |
| Item weight | 0.19 kg |
| Size | 4-1/4 inches |
| Capacity & performance | |
| Fastener Capacity | 2.17 inches |
| Construction & materials | |
| Material Type | Alloy steel |
| Color | Black |
| Included components | |
| Number Of Pieces | 2 |
| Unit Count | 1 Count |
| Other details | |
| Product Style | Modern |
Frequently asked questions
What do I get in a YRMJ spring clamp pack?
Two black alloy steel spring clamps, per the listing. No extra pads, tips or storage are named.
Are the YRMJ clamps screw clamps?
No. They are spring clamps, so grip comes from spring tension rather than a screw.
Are these rated for heavy clamping?
The title says heavy duty, but no clamping force or load rating is given.