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3C can offer many varieties, for instance:

External Rings  
stainless steel  
Crofer 1700/AISI 430 white
cupronickel type CuNi25 white
cupronickel type CuNi25 white
bronze type CuAl6Ni2 golden
bronze type CuAl6Ni2 golden
bronze type CuZn2.5Sn0.5 reddish
bronze type CuZn2.5Sn0.5 reddish
Inserts  
   
bronze type CuAl6Ni2 golden
bronze type CuAl6Ni2 golden
bronze type CuZn2.5Sn0.5 golden
cupronickel type CuNi25 white
bronze type CuZn2.5Sn0.5 reddish
bronze type CuAl6Ni2 golden
cupronickel type CuNi25 white

Further combinations are available on request. For example, all white parts on request. For example, all white parts can also be produced in pure nickel or can also be produced in pure nickel or nickel-resp. cupro-nickel-clad steel. nickel-resp. cupro-nickel-clad steel. Equally, gold coloured parts are Equally, gold coloured parts are possible in brass-clad steel and reddish possible in brass-clad steel and reddish parts in copper-clad steel, with all parts in copper-clad steel, with all edges covered in each instance. Also, edges covered in each instance. Also, in order to achieve specific and unique in order to achieve specific and unique properties for vending machines, one or both components could be of the Magnimat type of sophisticated clad metal. The following working method is considered to represent optimal technology and economy, having its roots in the classical method of joining by rivetting.