Cheap And Discounts 1Pcs Openbuilds GT2 Pulley 16/20 tooth Bore 5mm 6.35mm 8mm teeth Timing Gear Alumium For 2GT belt Width 6mm For 3D printer parts Wholesale. Buy Directly From Merchant AUTOMATION PARTS Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.