Cheap And Discounts MGFVR MGFVR320R MGFVR420R MGFVR325R External Face Reverse Grooving Holder for MGGN400 MGGN300 Series Carbide Insert MGGN/MGMN300 Wholesale. Buy Directly From Merchant XJ NC tool shop. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.