About products and suppliers:
Alibaba.com offers 6736 half coupling products. About 8% % of these are fashion jewelry necklaces, 7%% are men's t-shirts, and 2%% are fine jewelry necklaces. 

A wide variety of half coupling  options are available to you,  such as steel, spandex / polyester.You can also choose from micro insert, bezel setting and aperture setting half coupling,As well as from universal, jaw / spider, and gear.  and whether half coupling is women's, men's, or unisex.