Nap broadhead thunderhead 3-blade 100gr 1 3/16″ cut 5pk FEATURES-100 grain-1 3/16″ cutting diameter-5 pack-Micro grooved Slimline® ferrule-Diamize™ sharpened blades Other Features: Patented micro groove ferrule increases flight accuracy and penetration power,diamize sharpened blades for massive hemorrhaging/knock down power