Size:  About 3-5mm wide, hole: 1.5~1.8mm. Crimp covers are heavily plated for long-wearing jewelry designs. Show your support by incorporating these into charm bracelets, pendants, earring components and anklets.. Crimp covers are open on one side allowing them to slip over the crimp tube. They are designed to fit over the crimped bead or tube. They look like a bead, so it gives the design a more finished look..