Greenlee 720 Punch-Keyway Nibbler
- Material Type: Metal
- Item Weight: 2.54 pounds
- Color: Black
- Unit Count: 1
Refresh date unavailable · Based on the Amazon listing and published specifications, not hands-on testing.
A single-purpose hand tool for converting round holes to keyway slots, useful if that is exactly the job, with no powered cutting capability.
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ASIN: B001NJDTVYModel: 720Category: Nibblers
Overview
The Greenlee 720 is a hand-operated punch-keyway nibbler that turns an existing round panel hole into a rectangular keyway slot for toggle switches and similar panel-mount hardware. It works without a drill, cord or battery.
This is a screw-actuated hand tool rather than a powered cutter, built for one job: reshaping a round knockout into the key-shaped opening a toggle switch needs. Listing data here is thin, with no published dimensions, gauge rating or accessory list, so specifics beyond the tool's purpose are not confirmed.
- Converts round knockouts to keyway slots
- Hand-actuated, no power source needed
- Suited to toggle switch panel mounting
- Compact single-purpose design
Who it's for
Electricians and panel builders who already have a round knockout and need a keyway opening for a bat-handle or toggle switch. Not a fit for anyone cutting sheet metal shapes or curves, since that is a different tool category.
Pros and cons
- Purpose built for keyway-shaped holes
- No cord, battery or air line needed
- Compact hand tool for panel work
- Manual effort required for each hole
- Limited to keyway shape, not general cutting
- No published specs, gauge rating or accessories listed
Performance notes
The tool is manually actuated, typically by turning a screw or lever to draw a punch through the metal and form the keyway profile in stages. Because it relies on hand force rather than a motor, cutting speed depends on operator effort and material thickness, neither of which is specified in this listing.
Specifications
| Brand | Greenlee |
|---|---|
| Model | 720 |
| Dimensions & fit | |
| Item Weight | 2.54 pounds |
| Pin Hole Diameter | 0.1 inches |
| Construction & materials | |
| Material Type | Metal |
| Color | Black |
| Included components | |
| Unit Count | 1 |
| Included Components | 1 Greenlee Branded Product |
| Warranty & support | |
| Warranty Description | Limited Warranty |
| Other details | |
| Number Of Items | 1 |
| Sheet Count | 30 |
| Item Type Name | Tool |
| Part Number | 720 |
| Operation Mode | Push Button |
Frequently asked questions
What does the Greenlee 720 punch-keyway nibbler do?
It reshapes an existing round hole into a rectangular keyway opening sized for a toggle or bat-handle switch.
Does the Greenlee 720 need a drill or power source?
No, it is a hand-operated tool that works by manual actuation, not electricity or compressed air.
Can the Greenlee 720 cut sheet metal shapes or curves?
No, it is built only for keyway holes, not general sheet metal nibbling or curved cuts.