These ENCAP pages will fit in 3 ring or 4 ring binders. These will hold the 2x2 snap locks tatras. These lightweight and durable pages allow viewing the coins from both sides and make archiving and browsing easy. The coins are securely displayed because the pages cannot be opened once the binder rings are closed. All ENCAP pages by lighthouse are made from crystal clear PET and are 100% PVC free. ENCAPQ52