The double edge blade cleanly cuts fiberglass duct work andthe wire cutter's compound leverage mechanism makes wire cutting easy.This cutter features a convenient self-opening latch for one handed operation and comfortable, contoured grips. All-steel construction and nickel-chrome plated hardware provides long life and durability. All-steel, double edge blade cuts fiberglass and flexible duct. Easy duct wire cutting with compound leverage mechanism. Hardened steel handles are covered with contoured grips. Convenient self-opening latch for one handed operation. Designed for HVAC professionals who want superior results. For more than 160 years, Klein Tools has manufactured premium-quality, professional-grade hand tools that deliver the performance, durability and precision needed to get the job done right. Klein isn't just the name of our company, it's also our family name. Since 1857.