The Steel Force Premium 4-blade 125g broadheads are constructed from the finest knife grade, non-serrated stainless steel, precision cut using the latest state of the art laser equipment and carefully tempered to 49-51 Rockwell hardness. Each head is individually ground, stropped to a razor finish, and then assembled and tested for absolute uniformity.
Features:

Cut on contact design.
Knife grade stainless steel main blade, .040 and .048 thick, 49-51 Rockwell.
7075 Aircraft grade ferrule.
Replaceable main and bleeder blades.
Razor sharp.
Perfect flight characteristics.
Aggressive angle of attck produces superior penetration.
Patented blade locking system.