Clamshell Bead Tip with 2 closed Rings and a 0.90mm (0.036") Hole at base.It conceals the knot at the end of your strand design and creates a neat, professional look. The bead tip features a double-cup to more completely cover your knot for a flawless finish. Ring Specifications: 0.60mm x2.4mm Closed Outside Diameter Æ 0.095Ä | 2.4mm Inside Diameter Æ 0.044Ä | 1.1mm Dimensions when closed: 3.5mm x 7.0mm (0.138" x 0.276") Finish: Anti-Tarnish