Donau Elektronik Threading Tools CNC tap 632653 - Donau MMG30L, The Donau Elektronik MMG30L is a CNC tap designed for left-hand cutting of metric M3 threads, conforming to DIN 371 standards. It is part of the tap and die tools range, making it ideal for precision machining applications. This tool is typically used in specialised machining tasks that require reverse threading. Donau MMG30L CNC Tap M3 Left-Hand Cutting DIN 371 1 piece
