Four New Air Cleaner Clips for your Weber 2 1/2" air cleaner.  Often these get lost or missing.  4 will easily hold it together.  Brand new clip.  Make sure and measure your air cleaner.  For most kits there are two sizes of elements, 1 1/2" and 2 1/2", this for the 2 1/2" element.  It will work on all style carbs that have the washable rectangular top filter.