1 5M Aluminum Timing Belt Pulley. Tooth width: 21mm/0.826". Tooth number: 16. We will much appreciate it and try to improve our service. We will try our best to save your problem ASAP. A=28mm/1.1" B=18.5mm/0.728" C=You can choose D=38.5mm/1.5" E=21mm/0.826" F=1.5mm/0.059" G=M4.
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