When you order one, you are buying one pair of 2 hinges.
S.Parker 2019 Half Surface Single Action Spring Hinge, 4 1/2" x 4 1/2" - Prime Coat (Pair)
S. Parker single action spring hinges work well to close residential and commercial doors, and are adjustable.
4 1/2" Mortise Jamb Leaf
5 1/2" Surface Door Leaf