Sterile Non-Sterile Sterile Sterile Non-Sterile Non-Sterile Non-Sterile. With a 2″x 2″ size, they provide good coverage and versatility of usage. Thickness 4 Ply 4 Ply 8 Ply 4 Ply 5 Mil 3.5 Mil. JMU OTHER DISPOSABLE DENTAL PRODUCT.