MIDWEST® Snap Lock Punches feature a forged punch for strength and durability that is precision milled for punching a 3/8″ snap lock tab in sheet metal to join two sides together in forming duct, by inserting the rolled edge side into the tabbed side. 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!