MIDWEST® 3″ Interchangeable Blade Straight Handle Seamers feature 3″ X 1-1/4″ forged blades with 1/4″ sight graduations are commonly used by sheet metal and HVAC/R technicians to bend and form cold rolled and stainless steel, as well as galvanized, copper, and aluminum. MIDWEST® Interchangeable Blade system allows for other length blades to be installed (3″ & 6″ forged blades / 5″, 9″, and 15″ aluminum blades). Equipped with KUSH’N-POWER® compound leverage handle action which multiplies handle force while providing a soft, sturdy and comfortable grip. Made in USA!