Milwaukee SDS/Chuck Adapter Kit enhances the versatility of your rotary hammer by enabling the use of straight shank twist bits in drill-only mode. This kit features a durable 1/2 inch all-metal three-jawed chuck, an SDS to 1/2 - 20 thread adapter, along with a chuck screw and chuck key, making it easier to switch between different bit types for various drilling tasks. Designed for convenience and reliability, this adapter kit is an essential addition for anyone looking to maximize the functionality of their rotary hammer. Model Number: 48-66-1370