Sterling silver clamshell beadtips. Clamshell beadtips are best used with threads and small cords. The body of the beadtip closes around the ending knot, protecting it from wear. The loop at the top of the beadtip attaches to the clasp. Hole measures .022". Sold individually. TIP: We recommend using Hypo Tube Cement to secure the knot and keep the ends from fraying.