Mini spring clamps look like miniature 2" jumper cable clamps. They have black vinyl protective coverings and the handles have a small hole so that you can screw them into any surface. Simply pinch these clamps open and insert a side or bottom binding. Mini spring clamps are not as unobtrusive looking and are not made of weather resistant metals like the other attachment items , however they grip very very well. They are used for unusually strong wind conditions.