HTD 3M Timing Drive Pulleys 10mm Width - 15 to 60 Tooth - 5mm to 10mm Bore. HTD 3M Toothed Drive Pulleys for 10mm Belt. For 9mm or 10mm HTD Belt. 40 Tooth - 12mm Bore. 20 Tooth - 10mm Bore. 60 Tooth - 12mm Bore.
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