As another reviewer put it, "Ticking Monsters". Bought 2. As usual, Revine lost the first order. Finally received 2 which I ordered after backordering. First tick tick tick tick tick tick every round. I checked the weld by hand before installing, it was smooth but tick tick. It's only a matter of time before it fails. Every ticker blade I've ever had failed instantly at the weld. Disappointing. I will not use another blade like this once I have the ticking monster.