Klein is the only major tool manufacturer worldwide focused on electrical and utility applications. No other manufacturer of hand tools and related products used in electrical applications makes more …

For over 160 years, Klein Tools has remained dedicated to professional tradesmen worldwide, with a commitment to manufacturing the world's finest hand tools right here in America.

From electrical testers to clamp meters and all the specialty testers in between, Klein's test and measurement tools are designed to make reading measurements on jobsites as simple as possible.

Here at Klein Tools we are always innovating in our mission to provide professional tradespeople with tools and solutions that enable the highest levels of performance and safety. Check out the latest …

For more than 160 years, Klein Tools has manufactured premium-quality, professional-grade electricians' tools that deliver the performance, durability and precision needed to get the job done right.

The Current Q4 2025

Klein Tools Mobile Thermal Imager transforms smartphones into professional thermal imaging cameras with 19,200-pixel resolution. This compact thermal imager is designed to capture hot and cold spots …

Some projects are more complex than others and require a variety of tools to be used. For this reason, Klein has tool kits to assist professionals with these demanding projects.

Klein is a family owned and operated corporation based in the Chicago area since 1857

For over 160 years, Klein Tools has remained dedicated to professional tradesmen worldwide, with a commitment to manufacturing the world's finest hand tools right here in America.