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The MIDWEST® 3″ Interchangeable Blade Straight Handle Seamers are expertly designed for use by sheet metal and HVAC/R technicians. Their 3″ x 1-1/4″ forged blades feature 1/4″ sight graduations, and can easily bend and form various types of metal, including cold rolled and stainless steel, galvanized, copper, and aluminum. With the MIDWEST® Interchangeable Blade system, this seamer can also accommodate longer blades (3″ and 6″ forged blades, as well as 5″, 9″, and 15″ aluminum blades). Its KUSH’N-POWER® compound leverage handle offers a comfortable grip while multiplying handle force. Made in the USA!