Carmex Internal Multiple Threading Insert holder - For Carbide External/Internal Threading Inserts - SR0080D30-4The Carmex Internal Multiple Threading Insert Holder (SR0080D30 4) is a precision milling solution designed for internal threading tasks on CNC machines. It accommodates multiple carbide inserts to deliver fast, reliable thread milling with consistent results. Model: SR0080D30 4 internal threading insert holder designed for internal applications Multi insert capacity: Holds 48 carbide inserts per holder for extended cutting reach Compatibility: