Klein Tools 32950 Hollow Ratcheting Nut Driver Set
Six color-coded, impact-rated hollow nut drivers (1/4 to 9/16 inch) with a ratcheting handle. The hollow core clears long bolts and threaded rod.
Quick verdict
- Best for:
- Long bolts and threaded rod.
- Watch out:
- SAE sizes only.
Amazon US listing and availability checked October 28, 2026. Prices and stock can change.
Reviewed October 23, 2026 · How we review
Part of our buying guide: Which Multi-Bit Screwdriver Do You Need? 11-in-1, Tamperproof, Precision or Hollow Nut Drivers
Our Take
A normal nut driver bottoms out when the bolt is longer than the socket is deep. Klein's 32950 drivers are hollow for 3-3/4 inches, so they keep turning down threaded rod and long bolts, which is the everyday problem on strut channel, electrical boxes and shelving. Klein lists six SAE sizes (1/4, 5/16, 3/8, 7/16, 1/2 and 9/16 inch), each color coded, on 5-inch shafts with a 1/4-inch hex end. They're impact rated, so they go straight into an impact driver, and the set includes a ratcheting quick-connect handle for driving by hand. Rare-earth magnets hold the nut, with stronger magnets in the larger sizes. It's a specialist set: if you rarely meet long bolts, a multi-bit driver with nut drivers covers the basics. It isn't insulated. We haven't tested it ourselves.
Specs (This Configuration)
- Sizes
- 1/4, 5/16, 3/8, 7/16, 1/2, 9/16 in, color coded (Klein)
- Hollow depth
- 3-3/4 in, for threaded rod and long bolts (Klein)
- Shaft
- 5 in, 1/4 in hex drive, impact rated (Klein)
- Handle
- Ratcheting quick-connect Cushion-Grip (Klein)
- Magnets
- Rare-earth, stronger in larger sizes (Klein)
- Insulated
- No (Klein)
Best For
- Threaded rod, strut channel and long bolts
- Running nuts with an impact driver
- Electricians and installers who drive many nuts a day
Skip If
- You rarely drive nuts
- You need metric sizes
- You work on live circuits
What We Like
- Deep hollow core clears long bolts
- Color coding makes sizes quick to find
- Works by hand or in an impact driver
What To Know
- SAE sizes only
- Not insulated
- Klein's product page links to its warranty terms rather than stating them
- Our photo is Klein's press image from the product's 2024 launch
Pros
- Sold by Amazon.com on the listing we checked
- Impact rated
- Ratcheting handle included
Cons
- No metric sizes
- Bulkier than a single multi-bit driver
- Not for live electrical work
Alternatives
- Klein Tools 32500HD 11-in-1 Impact Rated Screwdriver — Four nut driver sizes plus seven screwdriver tips in one handle, for occasional nut driving.
- Klein Tools 32787 Precision Ratchet and Driver System — Eleven smaller nut drivers and dozens of bits with a micro-ratchet, for electronics and small hardware.
Why PriceDropIQ Selected It
When a bolt sticks out past the nut, an ordinary nut driver stops turning; these hollow drivers keep going, and they work in an impact driver or on the included ratcheting handle. They're for electricians, installers and anyone mounting shelves or strut on threaded rod. If you only drive the odd nut, an 11-in-1 screwdriver covers it.
Before You Buy
- Check the title says 32950 (Klein's 32940 is a different 6-piece set)
- Check you need SAE, not metric, sizes
- Check that the seller is Amazon.com or Klein Tools
Frequently Asked Questions
How deep is the hollow shaft?
Klein lists a 3-3/4-inch hollow core on 5-inch shafts, made for running nuts down threaded rod and long bolts.
Can I use them in an impact driver?
Yes. Klein lists them as impact rated with a 1/4-inch hex drive, and the set also includes a ratcheting handle.
Which sizes are included?
Six SAE sizes: 1/4, 5/16, 3/8, 7/16, 1/2 and 9/16 inch, each color coded.
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Reviewed October 23, 2026. Check the current offer, seller, availability, and shipping details on Amazon.
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