National Hardware 4" Satin Nickel Square Door Hinge, (3-Pack) features a durable heavy-gauge cold-rolled steel construction that ensures lasting strength and reliability. Designed with a flush pin for a clean, finished look, these hinges have a 5 knuckle, full mortise design with square corners that provide a classic and sturdy fit. The screw holes are countersunk for a seamless installation, and the removable pin allows for easy door installation or removal. I for both residential and commercial use, this 3-pack excellent value and dependable performance for your door hardware needs. Model Number: N830-404