10pcs GT2 timing pulley 16 / 20 tooth 2GT synchronous wheel gear M3 M4 thread driven wheel for 3d printer width 6mm / 10mm belt

10pcs GT2 timing pulley 16 / 20 tooth 2GT synchronous wheel gear M3 M4 thread driven wheel for 3d printer width 6mm / 10mm belt
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sku: 4000760236115
$25.69
Shipping from: China
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