1So Glassine (500 Pack)

1So Glassine (500 Pack): This appears to be a pack of 500 sheets of 1So grade glassine paper. Glassine paper is a smooth, translucent paper that is resistant to grease and moisture. It is commonly used for packaging food items, protecting photographs and artwork, and as a release liner in adhesive applications. The '1So' likely refers to a specific grade or weight of the glassine paper.