MIDWEST® Stovepipe & Duct Cutters produce two finished edges with one cut by removing 3/16″ [4.8mm] width of material from the center of the cut. Use in either hand. Equipped with KUSH’N-POWER® (US D718,602, D719,808) compound leverage handle action which multiplies handle force while providing a soft, sturdy and comfortable grip. Made in USA!