The PUNCH PIN KNURLED 4IN, 5/16 from Field Tool Supply is designed for precision applications requiring a reliable knurled grip. This punch pin features a robust construction ideal for various machining tasks. With a length of 4 inches and a diameter of 5/16 inch, it is perfect for creating accurate holes in metal and other materials. The knurled surface ensures a secure hold, preventing slippage during use. This tool is essential for professionals in metalworking and fabrication, providing durability and efficiency in every punch.