Size: about 5mm wide, 33mm long ; Package Included: 20 sets Lobster clasps with clip ends in shiny silver and golden color, fit for normal bracelet, necklace or choker making. Easy to Use: Insert the end of your cord into the crimp end, and use your pliers to flatten the folds at a time, tightly to the cord. These will fit up to 5mm cord. High Quality: Made of brass material with high quality electroplating, durable and with smooth surface, will not fade easily, perfectly work with leather cord, nylon cords and elastic cords. Perfect Combination: This fold-over crimp end features a square shape cord ends with lobster claw clasps, can be applied to cord ends directly and then finish the jewelry making, no need to take cord ends and jewelry clasps individually. Wide Use: Perfect for the latest leather, organza, silk and satin cord necklaces. Compatible with leather, suede, tassel, lace, hemp, or rattail satin cord bracelet, necklace or choker making.