Magnus Black Hornet Ser-Razor 125gr Fixed Broadhead - 3 Pack - The Black Hornet Ser-Razor incorporates a chiseled serration for more effective cutting inside an animal and that equals greater blood trails. The Black Hornet Ser-Razor is made from knife-grade stainless steel and is shaving-sharp right out of the package. It is precision-machined and spin-tested for perfect flight every shot, every time. 125 grain 2-blade 1-7/16in long x 1-1/4in wide Blade thickness for the Black Hornet Ser-Razor main blade is .059 thousands of a inch the bleeder blade is .040 thousands of a inch