4mm thick plug closure
The item consists of 1mm fine steel link chains and closes with a plug closure. The stem-shaped closure is made of brass and consists of 2 halves. One side has an extension that acts like a barb. the other side houses a rubber ring. The seal is a sealing closure and is similar to the audio jacks on stereos.
The accessories can be removed and replaced via the plug.
The chain and clasp are free of nickel, cobalt, cadmium, chrome and rhodium. By electroplating, the chains become rust-free and get their color: gold (14K plated), matte black (oxidized), metallic (electroplated), tricolor (mix of all colors)
The plug is plated and also made by the coating. The articles are in spite of rust protection, not suitable for daily contact to water such as showers, daily exercises or the direct contact with perfume.