The CRAFTSMAN 966020 21 PC BLACK OXIDE DRILL BIT SET is a versatile and durable set of drill bits suitable for various projects around the home and garden. With a total of 21 pieces included in the set, this collection is perfect for tackling a wide range of tasks. The black oxide coating adds a sleek look and provides corrosion resistance, making these drill bits a reliable choice for any DIY enthusiast or professional contractor. The set comes neatly organized in a case, making storage and transportation convenient. With the trusted Craftsman brand behind it, this drill bit set is a valuable addition to any toolbox.