The 357 Magnum Trolling Head, from Englund Marine, is the perfect insert head for Tuna skirts such as the Yo-Zuri models. Decorated with 6 red eyes that have been proven to draw the albacore, tuna, dorado, etc up from the depths. This head is best used with the Yozuri triple skirts or other unrigged Tuna skirts of your choosing. Simply unscrew the head and place the skirted material in-between the two metal pieces. Tighten the head back up and get to fishing. Using individual heads like the Englund 357 Magnum is a great option for anglers who wish to try several different types of skirt colors - rather than the pre-rigged Tuna Clone models. We recommend the 357 Magnum model for a little deeper water when you wish to fish fast. Weight: 3.57oz - hence the 357 name.