The Milwaukee Chuck Adapter 48-66-1370 is a high-quality drill bit designed for use with 1/2 inch diameter drills. Made from durable metal, this adapter is suitable for use with a variety of drilling applications. Backed by a 1-year manufacturer warranty, this adapter is a reliable and long-lasting tool for your workshop or home improvement projects. With a package quantity of 1, this adapter is a versatile and essential accessory for your power tool needs.