Arrow JT21CM General
- General
- 14.4 ounces
A light duty staple gun built on Arrow's well established JT21 design, a reasonable pick for general household fastening tasks.
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How it ranks among the 234 generals we track
4.3★ across 771 Amazon ratings, Bayesian-smoothed toward the category average.
771 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
300+ 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 234 generals we track - how the scorecard works · full generals data report. Confidence: medium - useful but incomplete evidence.Last refreshed Aug 4, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
The Arrow JT21CM is a staple gun, part of Arrow's long running JT21 model line, one of the more widely recognized light duty staple gun designs. It weighs 14.4 ounces, light enough for one handed use.
The listing title here reads simply 'General', which looks like a placeholder rather than a real product description, so the JT21 model number is the more reliable signal of what this tool actually is. The CM in the model likely denotes a specific finish or color variant, though that isn't confirmed in the available data.
- Staple gun from Arrow's JT21 line
- Item weight 14.4 ounces
- 4.3 average rating across 771 reviews
- About 300 bought in the past month
Who it's for
Fits users doing light upholstery, insulation, screening or general fastening jobs around the house, rather than someone needing a heavy duty or pneumatic staple gun for construction work.
Strengths and trade-offs
Drawn from this product's published specifications.
- Light enough for extended one-handed use
- No compressor or power source needed
- Not built for heavy duty or construction grade fastening
- Staple size and depth capacity aren't listed
Performance notes
At 14.4 ounces, this staple gun is light enough for extended one handed use on smaller jobs like upholstery, screening or insulation. As a manually squeezed tacker rather than a pneumatic tool, it trades raw driving power for portability and no need for an air compressor, which suits lighter materials better than dense hardwood or thick lumber.
Specifications
| Brand | Arrow |
|---|---|
| Model | JT21CM |
| Item Weight | 14.4 ounces |
Other Arrow generals
How it compares
This product against the closest alternatives we track in generals.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| Arrow JT21CM GeneralThis product | 4.3 / 5 | 771 | 3.9 / 5 |
| CARTMAN MX-TK39PC-ORANGE GeneralCARTMAN | 4.7 / 5 | 38,000 | 4.6 / 5 |
| Amazon DS-AMZ035 GeneralAmazon | 4.7 / 5 | 24,900 | 4.6 / 5 |
| Goldblatt G08501A GeneralGoldblatt | 4.8 / 5 | 8,236 | 4.6 / 5 |
| Craftsman CMMT45309 GeneralCraftsman | 4.8 / 5 | 5,900 | 4.6 / 5 |
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Questions about the Arrow JT21CM
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
What kind of tool is the Arrow JT21CM?
It's a staple gun, part of Arrow's JT21 model line.
Is it manual or pneumatic?
It's a hand squeezed manual tacker, not a pneumatic or powered tool.
What is it best used for?
Light duty fastening jobs like upholstery, insulation or screening rather than heavy construction work.