This set of drill bits includes five sizes: 1.5, 2.5, 3, 4, and 5mm. The bits are suitable for use with almost any drill, making them a versatile and essential tool for any workshop or toolkit. The set comes in a handy plastic storage case, keeping the bits organized and ready for use. Whether you are a professional contractor or a DIY enthusiast, these drill bits are an excellent choice for all your drilling needs. With their high-quality construction and precise design, these bits are sure to provide reliable performance for all your drilling tasks.