The TAPS URH(088) 1 3/8-18 GH4 B from Field Tool Supply is a high-quality right-hand tap designed for creating internal threads in tough materials. With a thread size of 1 3/8-18, this tap is perfect for heavy-duty applications. Made from premium steel, it offers exceptional strength and durability. The GH4 classification indicates its suitability for more challenging materials, providing superior threading performance. This tap meets industry standards for quality and precision, making it a reliable choice for professionals in various industries.