Our Koro Large Rodent trap is the largest of the Koro Rodent line. The Koro Large Rodent is made of .250 dia. mild steel and is equipped with .125 dia. music wire spring made in house. The original style Koro Large Rodent comes with a trigger dog that wraps over the strike arm and places in the hole located on the pan. The Koro Large rodent measures 5 3/8”L x 4 3/8”W x 4 3/4”H and is available in a single spring or double spring version. The Koro Large Rodent is generally used on large squirrels, but can also be used on mink and similar sized animals.