Continuing its 150th anniversary celebration, Klein Tools recently introduced three new commemorative, limited edition products. The three items include a nine-piece nut driver set, a contractor's leather zipper portfolio with handles, and a lockback pocket knife. The nine-piece nut driver set includes nine nut drivers plus a free zipper bag. The nut drivers feature Klein's exclusive 6-in. hollow shaft that is used on stacked circuit boards and other long bolt applications, color-coded handle ends and the patented Tip-Indent for easy identification of hex size.