Cheap And Discounts Turning tool R390-180608 PM4240 R390-180612 PM4240 Milling Inserts Metal Cutters CNC Cutting Tools R390 180608 PM 4240 Wholesale. Buy Directly From Merchant XunFeng Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.