General description The DEWALT SDS Max Drill Bit features a 4-cutter X-head design that enhances user comfort, reduces vibration, and improves hole quality. Its 4-flute spiral maximizes debris removal and drilling speed, making it suitable for heavy-duty applications. Technical specifications Diameter: 22mm Length: 540mm Working Length: 400mm Overall Length: 540mm Part Number: DT9420-QZ Compatibility and accessories Compatible with SDS Max hammer drills and rotary hammer tools designed for SDS Max bits. Installation Insert the drill bit into the SDS Max chuck of your compatible hammer drill or rotary hammer. Ensure the bit is securely seated before operation. Usage Use for drilling into concrete, masonry, and similar hard materials. Apply steady pressure during drilling for optimal performance. Wear appropriate personal protective equipment, such as safety glasses and gloves. Other information Designed for heavy-duty drilling tasks in construction and renovation projects.