Carmex Single Long Carbide Shank Threading Insert holders - For Carbide External/Internal Threading Inserts - SR0013J14CThe Carmex SR0013J14C is a long overhang carbide shank threading insert holder designed for external and internal threading on CNC milling centers. Built for shops that need precise, repeatable thread milling with cost efficient tooling, it delivers reliable performance across demanding operations. Long overhang design: overall length up to 270 mm (10. 5 inches) to reach deep features while maintaining rigidity. Internal coolant bore: integrated