20Teeth XL Timing pulley Bore 4/5/6/6.35/8/10/12/12.7/14/15/16mm for width 10mm XL Synchronous Belt 20-XL BF Gear 5.08mm Picth

20Teeth XL Timing pulley Bore 4/5/6/6.35/8/10/12/12.7/14/15/16mm for width 10mm XL Synchronous Belt 20-XL BF Gear 5.08mm Picth

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