We use only stainless steel eyepins, linkages, and jump rings for both their strength and durability. If there is any defect in the workmanship of a rosary you purchase from us, please let us know, and we will make it right, free of charge, including shipping, within the first year of purchase. Also, for as long as we make rosaries (a lifetime, we hope!), if a rosary we made for you ever has a broken linkage, eyepin, or jump ring, we will be happy to repair it, with cost limited to shipping.