Carmex Single Long Carbide Shank Threading Insert holders - For Carbide External/Internal Threading Inserts - SR0015K14CThe Carmex SR0015K14C is a single long carbide shank threading insert holder designed for carbide external and internal threading inserts, ideal for CNC milling with helical interpolation. It provides extended reach without sacrificing precision or budget. Internal coolant bore: Delivers coolant directly to the cutting edge for efficient chip control and extended tool life. Long overhang design: Engineered to provide an efficient, cost effective