The 1-3/8 inch 4MT CT check reamer from Field Tool Supply is designed for high-precision reaming tasks. Featuring a 4 Morse taper (MT) shank, this reamer ensures a secure connection with compatible machines. Constructed from high-speed steel, it provides exceptional durability and resistance to wear. The reamer is ideal for achieving accurate hole sizes in various materials, making it a versatile tool for professionals. With a diameter of 1-3/8 inches, it is perfect for a range of machining applications, enhancing efficiency and performance.