The Milwaukee Shockwave Carbide Hammer Drill Bit is a high-quality power tool accessory designed for efficient drilling. With a diameter of 1/4 inch and a length of 6 inches, this drill bit is perfect for various home and workshop projects. The Shockwave Carbide technology ensures increased durability and longer life, making it a reliable choice for professional and DIY use. The model #48-20-9011 represents the specific design and quality standards set by Milwaukee, a trusted brand in the industry. Packaging damaged, but never been used.