Cheap And Discounts 3D Printer CR10 Heated Block Titanium Alloy Heat Block Copper Plating For Ender 3 CR-10 Hotend 3D Printer Wholesale. Buy Directly From Merchant 3D Printer Red. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.