Cheap And Discounts 3D Printer Upgrade Aluminum Plastic Z-Axis Leadscrew Top Mount for CR-10/CR-10S, Ender 3/Ender 3Pro Metal Z-Rod Bearing Holder Wholesale. Buy Directly From Merchant Shop1102075156 Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.