7463 gland nut wrench features 1/4" and 7/32" diameter pinholes on the front. The two different diameters are designed to accommodate most hydraulic cylinders commonly used in agricultural and construction machinery. You can adjust the size of the wrench opening by modifying the nut located on the top, suitable for gland nuts ranging from 1" to 3-3/4" in diameter. The 7463 wrench is especially effective for smaller gland nuts. Utilize with a 1/2" drive ratchet or breaker bar to loosen and remove gland nuts, eliminating the need to strike stubborn nuts and risk hand injury. These wrenches are crafted from high-quality steel, offering strong durability. The surface is treated for enhanced rust and corrosion resistance, ensuring a long service life. If you frequently encounter challenging gland nuts in your tasks, this wrench is an excellent option. Note: The 7463 model is a small-sized gland nut wrench. For larger sizes, please consider the 1266 model.