Wasp 9100 Crossbow Boss 100 Short Aerodynamic ferrule and low profile blades are specifically designed for the high speed of todays modern Crossbows 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 1-1/8" Cutting Diameter - 100 grain - 3 per package Field Point Accuracy - Made in the USA