Carmex Single Long Carbide Shank Threading Insert holders - For Carbide External/Internal Threading Inserts - SR0013H14CCarmex Single Long Carbide Shank Threading Insert holders (SR0013H14C) are precision tool holders designed for external and internal threading inserts, optimized for long overhang work on CNC milling centers. Built for reliability and cost effective performance, they empower high precision threading with carbide inserts in a compact, rigid package. Carbide shank construction: Robust, rigid design built to withstand high speed threading with multi