These screws are a must-have for any DIY project or INDUSTRIAL application. Based on my experience Phillips Drywall Coarse Thread Screws Fasteners are incredibly easy to use and provide a strong hold. They work great with wood and drywall, making them very versatile. The only downside is the price may be slightly high, but the quality justifies the cost.These screws are a great addition to any toolbox and are worth the investment. Industrial and Scientific users won't be disappointed with this product..