Vevor 10” auger bit used with an earthquake 35064 auger. (Picture shows Vevor on the machine, with Earthquake brand to the right.) Quality: Considering the price difference between this auger bit and an earthquake 10” auger (3x more expensive), I wasn’t expecting much. However, I found that this bit (after drilling 3 holes) seems to be the same initial quality. The only difference is that it uses a pin instead of a bolt to lock the bit to the motor (I like this better). Usage: After using the 8” bit by myself, I would not recommend drilling with the 10” solo. Grab a friend or a spouse, and it will go much better. Solo, it would jerk me around, and I had trouble getting it to cut through roots. With my spouse, I could relatively easily cut through several 1.5-2” roots stacked on top of each other. Shipping: The packaging for shipping could easily be improved. Since the fishtail is just screwed on, they could remove it and ship it in the same box, but in a bag to be installed by the customer. That way, it would ship safer and even smaller. Due to the size and weight, the fishtail point busted through the box, and when the delivery man put it on my porch, it chipped my porch and dented the tip.