Norton Small Sportsman Pocket Stone 3in. x 7/8in. x 3/8in. NT346. This sharpener has two different sharpening surfaces a small rounded one and a larger shaped one. The rounded one is good for sharpening a rounded tip and the larger one is good for sharpening a dull point. The non-slip grooves of the Sportsman Diamond Sharpener will get your blade or pen stropped in no time while the diamond surface will get any edge you need. For a nice smooth finish and all purpose sharpening capabilities the Sportsman Diamond Sharpener is hard to beat. abcd Specifications for Norton Small Sportsman Pocket Stone: Manufacturer: Norton Blade Material: Stone Package Contents: Norton Small Sportsman Pocket Stone Norton NT346: Small Sportsman Pocket Stone 3in. x 7/8in. x 3/8in.