Easy To Work With--Simply use glue to insert the cord to the end cap and they will hold your string in place. Each cord end features with a top loop for attaching with jump rings or other connectors. Size--about 6mm wide, 10mm long, hole: 2mm; inner diameter: 5mm, 50pcs in total, with one clear plastic box. It fits perfectly around the ends of wire, rope, suit for making jewelry. Steel Climp Ends-- made from stainless steel metal; Strong and durable; Tarnish-resistant; Easy to work with and install, corrosion and tarnishing, which requires minimal maintenance. Design--They look like a bead, used to finish stringing materials like jewelry wire. So it gives the design a more finished look. Great for covering up crimping beads, cord knots, or wire ends for bracelet, necklace, earrings, or anklet jewelry making and crafting. Wide Application--Perfect for jewelry designs, you can use them with leather, suede, tassel, lace, hemp, or rattail satin cord to create necklaces, bracelets, earrings, tassels and Kumihimo jewelry.