The patented T-Shaped connection between the blades prevents separation of the Shuttle T-Lok blades from the ferrule even when fired into solid bone, concrete and metal. The sweeping blade angle also increases the total amount of razor blade surface without increasing overall size. The resulting oversized holes devastate game. The non-vented blades increase penetration and make flight silent. Cutting diameter 1 1/8â?쳌 on 100 grain, 1 3/16â?쳌 on 125 grain.