The Trocar HB features 0.35” 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 0.35” thick and have a cutting diameter of 1”. They have an offset for increased accuracy and stability. The total cutting diameter of the HB is 2-5/8”. The Trocar HB features a bone-crushing chisel tip.