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GT2 Idler Timing Pulley 16-tooth 20-Teeth with 3mm or 5mm Bore with Bearings for 3D Printer Parts Timing Belt 6mm 10mm
US $2.13
EU 2,43€
https://s.click.aliexpress.com/e/_oDgSQY3
US $2.13
EU 2,43€
https://s.click.aliexpress.com/e/_oDgSQY3