The best broadheads combine a simple design with state-of-the-art manufacturing. Steel Force Premium Broadheads do just that, with a sleek, no-nonsense design, and tempered knife grade steel construction. The main blade is cut-on-contact design and .040" thick. Each broadhead is precision cut using the latest state-of-the-art laser equipment and carefully tempered to 49-51 Rockwell hardness. Tested for absolute uniformity. Feature a patented blade locking system. Steel Force builds there blades from the finest knife grade Stainless Steel available. They use a straight edge on their blades to offer a slightly better penetration advantage over convex blade broadheads. Designed to fit all carbon and aluminum arrows as they have an industry standard 8-32 thread. This is the same thread used by all arrow inserts (except Easton Deep Six). Features a 11/32" ferrule. Measures approximately 2-3/16" long x 1-3/16" cutting diameter. Sold by the 3-pack. Grain weight of 125 grains only.