Wasp Boss SST 4-Blade 100 grain Broadhead Short, Aerodynamic aluminum ferrule with 4 Blade design provides for increased cutting, larger entrance and exit wounds and massive blood trails Stainless Steel Trocar Tip is Precision Machined and Hardened to Rockwell 46C and Hollow Ground to a near razor edge to blast through bone Razor Sharp .027" blades are Precision Ground and Honed and are always perfectly in line with the Trocar Tip edges to increase penetration 100 grain fixed - 1-1/16" Cutting Diameter - 3 per package Field Point Accuracy - Made in the USA