Since 1857, Klein Tools has been manufacturing tools in America, and itâ€™s as important for the Klein family to keep that tradition now, as it was more than 150 years ago. You see, Klein isnâ€™t just the name of their company; itâ€™s also their family name, so they have to be proud of everything they make. Klein Tools continues to invest in U.S. manufacturing and is committed to maintaining its place as the favorite among electricians. 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 items in America than Klein Tools.