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Stepper Motor - NEMA-23 Size with 9mm GT2 Pulley [140 oz/in 2.8A] : ID 5117 : $24.95 : Adafruit Industries, Unique & fun DIY electronics and kits
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TT Motor Pulley - 36mm Diameter : ID 3789 : $0.75 : Adafruit Industries, Unique & fun DIY electronics and kits
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