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🔩 One socket, endless impact — master your toolkit like a pro!
The Klein Tools 66031 3-in-1 Slotted Impact Socket combines two common hex sizes (3/4" and 9/16") in a single, high-torque 12-point design. Featuring a coaxial spring-loaded alignment slot for hands-free adjustment, this durable alloy steel socket is engineered for impact drivers and optimized for tightening and loosening hot-line clamps. Backed by over 160 years of professional-grade craftsmanship, it’s the ultimate tool for efficient, reliable pole hardware installation and removal.












| ASIN | B08R6FL5P8 |
| Best Sellers Rank | #14,979 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #21 in Square Drive Sockets |
| Brand | KLEIN TOOLS |
| Brand Name | KLEIN TOOLS |
| Customer Reviews | 4.8 out of 5 stars 979 Reviews |
| Drive Bit Shank Style | Standard |
| Drive System | Hex |
| Finish Type | Painted |
| Finish Types | Painted |
| Global Trade Identification Number | 00092644650871 |
| Included Components | 3-in-1 Slotted Impact Socket, 12-Point, 3/4 and 9/16-Inch |
| Item Length | 3.1 inches |
| Item Type Name | Sockets |
| Item Weight | 22.68 g |
| Manufacturer | Klein Tools |
| Manufacturer Part Number | 66031 |
| Manufacturer Warranty Description | Call vendor for warranty |
| Material | Alloy Steel |
| Material Type | Alloy Steel |
| Model Number | 66031 |
| Number of Items | 1 |
| Number of Pieces | 12 |
| UPC | 092644650871 |
| Unit Count | 1 Count |
J**E
Very useful for linework!
Great for linework making material up on the ground
J**K
Lineman's buddy!
Great socket for linemen. Popped it on a M18 mid torque 1/2 impact and it's never left. It's become my go to socket for day to day distribution line work. Great for shoes, hotline clamps, cutout arms, you name it. Doesn't replace the nut runners or anything used on the 7/16 M18 Utility impact, but works great on a smaller, lighter impact for tasks that require more dexterity. Can't speak about long term durability. It's been in use on my truck for about 3 months with daily mild to moderate use.
J**6
Great
Perfect tool for lineman
J**D
Recommend for lineman
I am a lineman and this is a very useful socket.
S**E
great!
Son, an electrition on power poles says this has made a huge difference!
T**N
Works great
Great tool!
M**U
Great buy and comes in handy to have!
Inside spring gets stuck so have to play with it sometimes in order to use on smaller bolts but great to have!
A**R
Worth the price
Use it everyday
A**R
Multi-tasks
Douilles multi-tasks par excellence pour monteur de lignes!
H**O
Calidad
Excelente producto, muy recomendable y versátil
D**E
qualité/ prix
Très pratique et facile à utiliser
G**Y
Just what we needed
Bought this for use in powerline construction, fits 99.9% of the smaller nuts…there’s the odd 1/2” out there but not common enough to buy the socket kit
J**S
Lineman’s socket
Must have for lineman
Trustpilot
2 days ago
1 month ago