This fits your .
Pull to open, squeeze to close. Designed with 88mm outside diameter and 4mm thickness. These Binder rings open to hold punched material. Used for loose-leaf book, memo filing, key rings, scrapbooking, sample holder or other loose-leaf items.
Metal Loose Leaf Rings Binder Keyrings 3.5-inch 7 Pcs - B00ARB9TUO