Sk Professional Tools was founded in the early 1900s as the Sherman-Klove Company by Mason H. Sherman and Noah Grover Klove. In the early days, we specialized in contract work, producing tools and parts for other companies. After a brief period producing munitions and mortar shell casings during WWI, we returned to our true love and what still drives us today – manufacturing quality tools for the American technician. From the original Round-Headed Ratchet to the SK® X-FRAME® Ratcheting Wrench, we’ve been innovating for American professionals since day one. Today, as part of IDEAL INDUSTRIES, INC., SK Professional Tools manufactures over 3000 products and continues our commitment to providing quality, American-made innovation to the toughest professionals in the world.