THIS IS A VERY STONG PEN LEASH. ALWAYS HAVE A PEN AVAILABLE WHEN NEEDED. ATTACH THIS PEN LEASH TO ANY CLIPBOARD OR NOTEBOOK. MAKES A GREAT ADDITION TO ANY BUSINESS, SCHOOL, OR HOME. CARABINER COLORS WILL VARY. (This is the original clip board pen leash. We have upgraded the carabiner connector from plastic to a strong aluminum ferrule. This was done after a few negative comments. We listen to our customers and try to upgrade the product accordingly. This remains a strong and sturdy product that will give you long service. the cord is not merely "string", it is a braided nylon cord with a core and is tested at over 500 pounds breaking strength.)