This is the handy type of the Harinacs stapler, which doesn't use metal staples. I had high expectations because it doesn't use metal staples, but the number of sheets it can bind is a paltry 4, and the bound part comes apart if you apply strong force. It was not practical for the seller's intended use (viewing documents). However, it might be suitable for the purpose of storing documents, such as keeping similar documents together in a folder. It has been used, so there are scratches, etc.