The TAP LH (064) 1-12 GH4 T from Field Tool Supply is a left-hand tap designed for creating internal threads in various materials. With a size of 1-12, it is ideal for applications requiring reverse threading. Constructed from high-speed steel, this tap provides exceptional durability and performance. The GH4 classification indicates a high-quality tap suitable for more demanding threading tasks. This tap is compatible with standard tapping machines and hand tools, making it a reliable choice for professionals in metalworking and fabrication.