The TAPS LH(065) 1 1/64-8 H4 B by Field Tool Supply is engineered for left-hand threading, featuring a size of 1 1/64" and 8 threads per inch. Crafted from high-speed steel, this tap offers exceptional durability and performance, making it suitable for a variety of materials including steel and aluminum. The H4 tolerance ensures a precise and reliable fit, essential for high-quality threading applications. Ideal for use in mechanical workshops and manufacturing settings, this tap is compatible with standard tapping machines and is a must-have for any tool collection.