CBRIGHT Combination Whetstone,400#/800# Pocket Sized Sharpening Stone, Rough Grinding Silicon Carbide Boron Stone[3.94x0.79x0.39inch]

The Whestone Grit : 400 #/800 # --Two materials of whetstone, silicon carbide + boron carbide, our double-sided whetstone can be finely grinding on one side and coarsely grinding on the other side. MATERIAL: silicon carbide / boron carbide.---It's very useful and portable Whetstone.The workmanship is very compact. LOOK FIRST PLEASE: THE STONE IS A Pocket-sized SHARPENING STONE -CHECK THE SIZE FIRST : STONE SIZE:100mm x 20mm x10mm[3.94*0.79*0.39inch](PLEASE PAY YOU ATTENTION ON ITS SIZE) The stone have two sides with different material for you. Note: Normally, please add water or oil to grind together. [High hardness and wear resistance ] -The sharpening stone widely use for grinding, polishing of various precision components,pocket knives, cutting tools,precious stones etc.., Weight: 0.220462262 pounds, Manufacturer: CBRIGHT