StoreSMART Calendar Corners - Clear Plastic - 500 Pack - PE1336DCL-500 Crafted of 8-gauge crystal clear vinyl. Overall size: 3" x 3" x 4 1/4". To use: Place adhesive (glue dots, hot glue, etc.--not included) on the back corners of your calendar chipboard, on each corner of your menu board, or wherever you wish to mount the Calendar Corners. Then simply slip them over the corner. To work properly with a calendar, the calendar pages and chipboard must be the same size. Made in the USA.