I use these products to cut through plywood under a bezel to pull down CAT5 for CCTV cameras. I've also used it for drywall drilling. The products are quite strong and produce good holes if you make a proper pilot hole first. For the price I like this product. I'm concerned about its durability, but for both DIY and lay people, it seems to answer emails. And for the price we can say this is a good buy. The only downside is that they don't need to be stored; hence the lower price I suspect, so just make sure you have a good home for the tools so they don't damage other equipment or the power cords they're stored with.