SK Tools USA, LLC has been forging excellence in the world of hand tools for over a century. Founded in the early 1900s under the name Sherman-Klove Company by Mason H. Sherman and Noah G. Klove, the company has grown from its roots making contract parts to becoming a trusted name among professional mechanics and tradespeople.

While SK made munitions during WWI and produced screw-machine work early on, it always had a passion for precision and durability. From the breakthrough Round-Headed Ratchet, to the innovation of the SK X-FRAME® Ratcheting Wrench, SK Tools has repeatedly proven that engineering means more than just function—it’s about craftsmanship.

Throughout its history, SK has been built on a foundation of technical innovation. In the 1930s, the company introduced knurled-base sockets with tapered walls to reach tight spaces, and in 1934, engineer Theodore Rueb designed the landmark fine-tooth round-head ratchet—a style that still inspires modern designs.

Today, SK Tools manufactures over 1,500 products, ranging from sockets, wrenches, and drive tools, to specialty tools, storage, pliers, and cutters. Their products are built in Williamsport, Pennsylvania, following a recent relocation from Sycamore, Illinois, which allows SK to leverage the resources and precision-focused culture of their sister company Shop-Vac USA. Being part of GreatStar Industrial USA gives them global scale while allowing their premium quality and innovation to stay rooted in American craftsmanship.

SK Tools stands for more than tools—it’s for the technician with grease under their nails, the one who lives life under the hood, who demands precision, durability, and performance. Every tool they make is backed by a lifetime warranty.