Cheap And Discounts Printfly 2GT 20 Teeth Synchronous Wheel Idler Pulley Bore 3mm 4mm 5mm 6mm 8mm with Bearing for GT2 Timing Belt Width 10MM Wholesale. Buy Directly From Merchant Printfly YuShan 3D printer parts Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.