This product in the Industrial and Scientific category is a complete disappointment. My analysis of this product showed that it lacks precision and durability, and it doesn't perform as well as advertised. The drill bits are prone to breaking, and the engraving is uneven. The only positive point is its affordability, but that's not worth it if you end up with poorly executed work. Overall, I would not recommend this product to anyone in the market for a quality Industrial Power and Hand Tool.