The TAP BR (128) 2-4 1/2 BSW B from Field Tool Supply is designed for British Standard Whitworth threading. This tap features a size range of 2-4 1/2, making it ideal for various applications in metalworking. Constructed from high-speed steel, it provides exceptional strength and durability. The tap is suitable for both manual and machine tapping, offering flexibility for different projects. Its precision design allows for efficient cutting, resulting in high-quality threads that meet industry standards, making it a reliable tool for engineers.