LIHIT LAB. Color Fasteners F-8CU-50 Steel, Painted Gray ● With adhesive stickers, can also be used for folders, etc. ● Length: 35mm ● Suitable capacity: 230 sheets of copy paper ● Number of holes: 2 holes ● Hole spacing: 80mm ● Material: Olefin steel plate These are used to bundle documents by passing them through the holes. Several were used and stored at home for a long time. 42 unused pieces remain. There is some discoloration on the release paper due to aging. The adhesive seems to be fine.