Sledgehammer: 150 grains, 3 1/2" cutting diameter, with three 0.027" stainless steel blades. The Sledgehammer delivers a larger payload more accurately than any hunting arrowhead ever made. It was made in response to demand from customers shooting 80 pounds that were slicing through Whitetails with the Buckblaster and still looking for their arrows. It's also a great turkey head as it delivers a tremendous thump that keeps them firmly on the ground.