18K Yellow Open Top Spring Rings 5mm, 5.5mm & 6mm Size:6.0mm Economy Rolling Mill #128

Economy Rolling Mill #128

designed for use with ring shanks drilled with a hole

Hard flow grade — ideal for the first solder join in multi-step sequences

1 × 3/32" mandrel

Because cobalt steel is harder and more brittle than HSS

18K Yellow Open Top Spring Rings 5mm, 5.5mm & 6mm Size:6.0mm Economy Rolling Mill #128Spring rings are the most popular type of clasp used for chains worn around the neck secure, reliable, and easy to use. These 18K yellow gold spring ring clasps feature a round hollow tube body with a tiny coil spring inside and an open top jump ring for connecting to one end of a chain. A spring tensioned bolt with an attached lever opens when you push it back with your fingernail; that same internal spring holds it firmly closed. Opening and closing