Drill Doctor DD750X ORMD That is 40 square inches

That is 40 square inches of continuous diamond surface

some rotary lawn mower blades

Built-in elastomeric springs hold the knife blade securely against the angle guides

and is 300 Grit (40 micron)

Adjust Blade Curvature

Drill Doctor DD750X ORMD That is 40 square inchesKeep Your Drill Bits Sharp Do not let your drill bits become dull and unusable! The Drill Doctor 750X is the perfect, simple way to sharpen your drill bits if you are using common bit styles, or if you are using split point or 115 140 degree bits that are used to drill into harder metal. Using a front loading chuck, the Drill Doctor 750X sharpens standard twist bits ranging from 3 32" 3 4" and will also sharpen carbide, masonry, high speed steel,