General Description: This adapter converts 1 1/4' UNC to SDS plus. Made of strong and durable steel, it is designed to withstand heavy-duty use. Technical Specifications: Material: Steel Type: UNC to SDS plus adapter Compatibility and Accessories: Compatible with all hammer drills equipped with an SDS PLUS accessory. Used for core drilling rigs and UNC thread with SDS PLUS socket. Installation: Check compatibility accessories before installing the adapter. Follow your drill's instructions for proper assembly. Use: Caution! This adapter is designed for SDS PLUS only and should not be used in hammer mode.