New 5 Pcs - NG3127L  KC75 Coated Grooving Inserts.......Inserts are 3 Series.....Left Hand......with Grooving Width of .127 ......There is No Such Thing as a NG3127L Standard Grooving Insert from Kennametal.......That's Why There is a B78981 Part Number on Package......it's a Special Grooving Width of .127........Nothing Wrong with Inserts......They Work Just Fine......Fits Your Standard 3 Series Left  Hand Top Notch Tool Holders & Right Hand Grooving Bars........Inserts Look to have about .015 Corner Radius

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