Carmex Thread Turning Holder Drop Head - External - Right Hand - 150mm OAL - 16ER Insert - 25x25 Shank SizeThe Carmex Drop Head Thread Turning Holder is a precision tool for external threading on lathes, built for professional workshops that demand reliability and consistent thread forms. Its drop head design delivers enhanced access to tight work areas while keeping the cutting edge firmly aligned for clean, accurate threads. Drop head design: The drop head geometry positions the insert at the optimal height and angle for external thread turning,