Cheap And Discounts 5pcs 2 Flutes cutting hardness hrc45-50 R0.5 R1 R1.5 R2 R2.5 R3 carbide ball end mill cnc Milling tools Milling cutter Wholesale. Buy Directly From Merchant KNIGHT TOOL. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.