Is this set really rated for live electrical work?

Yes. Each driver is individually tested to IEC 60900 and ASTM F1505, and the insulation is rated to 1,000 V.

How many drivers come in the set?

The listed contents show six drivers, from 3/16 to 7/16 inch, in a zippered case, though the set is described as nine-piece.

Do the shafts fit over long bolts?

Yes. The shafts are full hollow, so a nut can sit deep inside the driver on long threaded rod.

How do I tell the sizes apart?

Tip-Ident markings on the handle end show the size, so you can pick the right driver without checking the tip.

Does it come with a case?

Yes. A black nylon case with a zipper and custom-fitted pockets holds the drivers.

Is it better than an insulated screwdriver set?

For nuts and long bolts, yes, because of the hollow shafts. For screws and mixed fasteners, a screwdriver set covers more tip types.

Where is the Klein Tools 33524 Insulated Nut Driver cheapest?

At The Home Depot, for $229.99, as of our latest check.

Where can I buy the Klein Tools 33524 Insulated Nut Driver?

3 stores we checked sell it, including The Home Depot, JB Tools, Msc Industrial Supply.

Klein Tools 33524 Insulated Nut Driver Price History: Lowest $229.99

What reviewers say

Owners are electricians and tradespeople who value the certified insulation and the hollow shafts for long-bolt work. Most praise the build and the clear size markings; some wish the set covered more sizes.

What people mention

InsulationPraisedOwners trust the two-layer insulation for live electrical work.
BuildPraisedShafts and handles feel solid and hold up to daily trade use.
Shaft depthPraisedThe hollow shafts let users drive nuts down long bolts.
Size rangeCriticisedSome buyers want more sizes, including larger and metric options.
Handle bulkMixedHandles are comfortable but bulky in tight spaces.

From JB Tools

9-piece insulated nut driver set with popular sizes
Each tool individually tested to exceed IEC 60900 and ASTM F1505 standards
Full hollow shafts facilitate work on long bolt applications
Durable two-layer molded insulation protects against electric shock
Tip-Ident quickly identifies nut driver and size
Black nylon case with zipper closure and custom-fitted tool pockets

Sizes: 3/16-Inch, 1/4-Inch, 5/16-Inch, 11/32-Inch, 3/8-Inch, 7/16-Inch, 1/2-Inch, 9/16-Inch, 5/8-Inch
Materials: Two-layer molded insulation; black nylon case; cushion grip handles
Guarantee: JB Tools offers a 100% satisfaction guarantee and a Warranty Program; as an independent re-seller, manufacturer warranties may not be honored.
Returns: 60-day hassle-free return policy; replacement (subject to availability) or full refund less return shipping costs, at the customer's option.
Shipping: Free shipping on orders over the stated threshold; global shipping available; international orders not accepted during the store's move.
In the box: 646-3/16-INS, 646-1/4-INS, 646-5/16-INS, 646-11/32-INS, 646-3/8-INS, 646-7/16-INS

About the Klein Tools 33524 Insulated Nut Driver

This is a 9-piece insulated nut driver set in popular sizes from 3/16 inch to 5/8 inch. Each driver has two-layer molded insulation that protects against electric shock. Each tool is individually tested to exceed IEC 60900 and ASTM F1505 standards.

The shafts are fully hollow, which allows work on long bolts. The handles have cushion grips. Tip-Ident marking identifies each nut driver and its size quickly.

The set comes in a black nylon case with a zipper closure and custom-fitted tool pockets.