28T 30 teeth HTD 3M timing pulley pitch 3mm aperture 4/5~19/20mm aluminum alloy synchronous gear pulley width 6/10/15/20mm

28T 30 teeth HTD 3M timing pulley pitch 3mm aperture 4/5~19/20mm aluminum alloy synchronous gear pulley width 6/10/15/20mm
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sku: 1005006222855854
$3.86-2%
$3.78
Shipping from: China
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