Sterling Silver 4mm Crimp Covers.  These Crimp Covers are US made and are great for covering a 2x2 or 2x3 crimp bead.  They are a great addition to any design to camouflage the crimp bead.  Many designers prefer to use this size crimp cover vs. the 3mm or 3.2mm because this one is much simpler to complete.  Simply insert the crimp cover over the finished crimp bead on your design and take your chain nose pliers and slowly close the cover over the crimp bead.  You are left with a beautiful finished piece that looks like you have a 4mm bead at the ends.