The Trocar HB Hybrid 4-Blade Broadhead features 0.035" thick surgically sharp stainless steel mechanical blades that stay tucked in tight to the solid-steel ferrule in flight, but they deploy reliably with a 1 5/8" expandable cutting diameter. The fixed blades are also 0.035" thick and have a cutting diameter of 1". They have an offset for increased accuracy and stability. The total cutting diameter is 2 5/8". The Trocar HB features a bone-crushing chisel tip. Features: 4-Blade (2 fixed and 2 mechanical). 100 grain. Chisel tip. Stainless steel ferrule. 0.035" thickness blades. 1" fixed blade cutting diameter. 1 5/8" expandable cutting diameter. 2 5/8" total cutting diameter. Offset fixed blades to induce spin. 3 per pack.