Material: ALLUMINUM FERULES Color: Straightness Factor +/-: Weight Tolerance +/-: Mechanical: Y Fixed: N Grain: 100 Length: Diameter: Other FEATURES: PATENTED Mini-Tip BLADES That GREATLY Enhance Penetration, .035" Thick 440 SS BLADES Combined W/Aircraft Grade ALLUMINUM Ferule For Toughness Other FEATURES2: For Whitetail Size Game It Is Recommended You Shoot A Minimum Of 65 FT Lb Of Kinetic Energy,Made In The USA,3/Pack