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until this morning i did not know the process of how they were made. with the the help of bernawanfr,he steered me to emma who works at sinnob. i assumed the sprockets were plastic/poly material. i’m still intrigued with the design and coating process. i assume it’s a steel sprocket that’s coated with polyurethane substance. emma says even the teeth are coated.
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"trying not to get old" 
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