This 10 piece impact grade screwdriver bit set is an excellent choice for those looking for a durable and convenient tool for their screwdriving needs. The bits have a black oxide coating, providing added durability and resistance to wear. The set includes a quick change ¼" hex shank, allowing for easy and convenient bit changes. The bits can be used in both corded and cordless impact drivers, making them a versatile and essential tool for any workshop or toolkit. Whether you are a professional contractor or a DIY enthusiast, these screwdriver bits are an excellent choice for all your screwdriving needs. With their high-quality construction and precise design, these bits are sure to provide reliable performance for all your screwdriving tasks.