The STI TAP RH 4-40 GH2 B from Field Tool Supply is a high-quality right-hand thread tap designed for precision threading applications. With a 4-40 thread size, this tap is ideal for creating fine threads in various materials, including metals and plastics. The GH2 classification indicates a higher tolerance for precision work, making it suitable for applications that require exact specifications. Its durable construction ensures longevity and reliable performance, making it a must-have tool for machinists and engineers looking for accuracy in their threading tasks.