I bought this to use on a hammer drill to dig a 15 inch deep post hole for a 4 wheel drive car. I didn't want to use a pole excavator and rent a 2 pole excavator. This pin was big enough and strong enough to take hitting rocks and all. The wave was the only weak point. The metal began to wear out. But otherwise worth every penny. I still can't use it on lighter items but the metal was tougher.