16-Piece Hole Saw Kit with Case (3/4" to 5") - High-Speed Steel Bi-Metal Hole Cutter Set for Wood, Metal, Plastic - Perfect for DIY, Construction & Plumbing Projects

Before buying this kit I was leery because of the low amount of stars and several bad reviews. However, I was buying this kit for hydroponics and hence drilling into plastic and not wood or metal. I can tell you that if you're not drilling into hard materials this hole saw kit is a fantastic investment and value. However, I can definitely see how many people complain about the quality for drilling harder things as I wouldn't personally trust it with wood and definitely not metal. Overall it just depends what you're gonna use it for, but set your expectations accordingly depending on what you're going to be using them for.Though I will mention, even when drilling through plastic the saw does sometimes try to come apart (never enough to have an accident but it gets slightly loose) so that may be another thing you want to keep in mind, however, again, take into account the price of the item, you can't expect excellent quality.