The Magnus Stinger Four Blade couples the powerful performance of the two-blade version with an exclusive Bleeder Block to lock in the 3/4 bleeder blades. Precision machined from knife-grade stainless steel and sporting an aircraft aluminum ferrule, Magnus Stingers fly true out of the fastest bows. The diamond tip gives extreme strength for bone-splitting penetration. Resharpenable, replaceable main blade and bleeder blades. Per 3. Cutting dia: .042-thick main blade. Sizes: 85, 100, 125, and 150 grain. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Fixed-Blade Broadheads.