I probably have enough Thunder Heads left, to last the rest of my life, Unless I go Deer Killing Mad! I resharpen them with a TruAngle Broadhead Hone, and they are sharper than Factory ever dreamed of being! I cant remember theGuy's name that use to sell them ( it's been years) but He was out of Wabash, In. I baught 2 of them, one for 3 blades, and one for 4. On 3 blade cut on impact, I use the 3 step process, 1 File, 2 Hone, 3 Leather. They are also sharper than you willever Buy!