Thong, or cord ends, allow you to attach a clasp to a length of cord or thonging to convert it into a necklace.

Jewellery Making Starter Kit (Red and Black)
A Starter Kit for Jewellery Making that includes full instructions, jewellery tools and enough beads and findings to make, 2 Strung Necklaces, 2 Bracelets, 5 pairs of Earrings and 1 Wirework Link Bracelet.
Thong, or cord ends, allow you to attach a clasp to a length of cord or thonging to convert it into a necklace.