Thank you for visiting! ・ω・/ Instant purchase is OK＾＾ This is a set of 2 sets of screen door stoppers (4 stoppers total). For pet and child safety. 【Product Description】 Screen door jump-out prevention lock, 2 pieces for increased safety. - Brand: Richell - Product Name: Screen Door Lock - Quantity: 2 pieces - Installable gap: 3.5mm or more - Purpose: Screen door jump-out prevention #ScreenDoorStopper