Quick Summary
The Klein Tools 32940 is a 6-piece SAE magnetic hollow impact nut driver set. It includes six hex sizes: 1/4, 5/16, 3/8, 7/16, 1/2, and 9/16 inch. The 5-inch shafts provide extended reach, and the hollow design helps when working with threaded fasteners.
Key Details
| Detail | Product information and buyer relevance |
|---|---|
| Brand | Klein Tools, the brand named for this nut driver set. |
| Model | 32940. |
| Product type | Magnetic hollow impact nut driver set. |
| Pack size | 6 pieces. |
| Drive sizes | 1/4, 5/16, 3/8, 7/16, 1/2, and 9/16 inch SAE sizes. |
| Shaft length | 5-inch shafts for added reach. |
| Magnetic feature | Rare-earth magnets are stated to help hold fasteners in place. |
| Impact rating | Impact-rated for demanding driving tasks. |
What to Compare Before Buying
- Size range: Compare the six SAE sizes with the fasteners you work with most often.
- Hollow shaft design: Check whether you need clearance for threaded fasteners or long bolts.
- Shaft length: The 5-inch shafts affect how far the driver can reach into recessed areas.
- Pack quantity: This set includes 6 pieces, so confirm that the size spread matches your needs.
- Impact-rated use: If you plan to use an impact driver, make sure this type of nut driver matches your tool and task.
Before You Decide
Confirm the SAE size range, the hollow shaft design, and the 6-piece set format before choosing an offer. The 5-inch shafts and magnetic holding feature are the main distinguishing details to compare against your fastener sizes and working space.





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