1 Large quantity: therere 600 pieces crimp beads covers, containing two colors of gold and silver, each color has 300 pieces, each color is divided into 3 sizes, including 3 mm, 4 mm and 5 mm (100 pieces per size); Sufficient quantity and different sizes can meet your needs,2 Convenient to use: our crimp beads covers are open on one side, which allows them to slip over the crimp tube, and crimp beads can be applied with all beading wire to secure the start and finish of the strand,3 Dimension: 3 mm in diameter with the hole size is approx 13-15 mm, 4 mm in diameter with the hole size is approx 15-18 mm, 5 mm in diameter with the hole size is approx 18-20 mm, all the width are 25 mm, which can work as beads spacers to decorate and fasten your glass beads, wood beads or charms in your bracelet, necklace, anklets and earrings design,4 Quality material: the beads spacers are made of copper, which provides nice form ability, high work ability and durability, and resistance to corrosion, anti-rust and colorfast, can serve you for long time,5 Jewelry craft supplies: the crimp beads covers are designed to fit over the crimped bead or tube, they look like a bead and can be applied in jewelry repairing or making project for crafts, including making bracelets, necklaces, charms, anklets, keychains, etc, nice to attach jump rings or to hold beads in place for your every jewelry projects