Magnus Black Hornet Ser-Razor Broadhead 4 Blade 150 gr. 3 pk. The Magnus Black Hornet Ser-Razor is a robust 150-grain broadhead equipped with four sharp blades for optimal performance. Measuring 1 7/16" by 1 1/4", it offers deep penetration and a wide cut. With a main blade thickness of .059" and bleeder blades at .040", this broadhead combines durability with lethal precision. Colors: Black Features: 150-grain 4-blade broadhead, ensuring deep penetration Dimensions: 1 7/16" length x 1 1/4" width for a broad cut Main blade thickness: .059" for durability Bleeder blade thickness: .040" for a sharp cut Field-tip accuracy from even the fastest bows Package includes three broadheads