Industrial and Scientific based on my experience, these screws are the perfect choice for any DIY project or professional construction work. What I love about this pack is the variety it offers so you can use them for almost anything. The quality of the screws is top-notch, and they are super durable, which makes me feel confident that they will last a long time .However, the only downside is that they are a bit pricier compared to some other options in the market. Overall, I highly recommend thSee full review