The ferrule is precision machined from a solid piece of steel rather than aluminum or being molded from powdered metal, resulting in a more durable and accurate flying broadhead. First ever Spring Retntion System secures the blades in the ferrule even when not on an arrow. The blades are also held in place by our two-position locking design located in the tip. An Aggressive tip design creates an un-sealable hole which causes massive hemorrhaging and quicker recoveries. Fierce looks, excellent flight, American Made, its the toughest replaceable blade broadhead you will ever shoot. 1-1/8 inch cutting diameter, 0.032 thick 440 stainless steel blades. T1 û 100 Grain Broadheads