Silicon Carbide 4" x 1/2" Round File Grit:Coarse but not as hard as

but not as hard as most of the Arkansas stones grades

The seats can swivel and be locked with the screw (6) at any skew angle between 0° and 45°

Stones this good deserve safe

It is approximately 4 -3/8" x 1-1/2"

I've received my Edge On Up Tester and don't see the Test Media

Silicon Carbide 4" x 1/2" Round File Grit:Coarse but not as hard asSilicon Carbide Files Silicon carbide file are ideal for fast material removal. Their abrasive nature makes them perfect for quickly performing operations like coarse sharpening, shaping, leveling, or removing burrs after machining. Silicon carbide stones are relatively fast cutting compared to aluminum oxide files, and are often employed when speed is important. Dimensions 4" x 1 2" Round Available Grits: Fine 280 Grit Medium 180 Grit Coarse 120 Grit