Cheap And Discounts MEGA 2pcs Bi-Metal CR10 Heatbreak Titanium Copper Coating Throat Smooth 1.75MM Heat break For 3D Printer CR10 ENDER 5/3 CR-10S Wholesale. Buy Directly From Merchant mega Official Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.