Nordent E34T #34 Elevator With Titanium Nitride CoatingProduct Overview Gouge with a 4. 7mm blade width. Has a gentle back curve to improve adaptation. Also available with serrated blades for extra gripping action along the blade surface or with titanium nitride coating to further extend the life of blade sharpness. Features 4. 7mm Blade Width Gentle back curve improves adaptation Titanium Nitride (TiN) coating increases the surface hardness of instrument tips Extends sharpness retention Reduces surface