General description This SDS PLUS adapter allows you to convert a 1 1/4-inch UNC shank to SDS-plus, making it suitable for use with core drills. It is designed for all hammer drills equipped with an SDS-plus shank. Technical specifications Material: 45 steel Type: SDS-plus Thread: 1 1/4-inch UNC Usage This adapter is intended for use with core drills. It cannot be used in hammer mode. Other information Ensure shank compatibility before purchasing. Note: This is SDS-plus, not SDS-max.