Atoplee 8pcs Knife Razor Sharpening Fine Stone Whetstone Oilstone Polishing Sharpener 200#400#800#1500#3000#6000#8000#10000# [8 Sizes] Size:150mm*20mm*5mm Type: 001:Corundum oil stone(200#) , 002:Green carbon oil stone(400#) , 003:Boron carbide oil stone(800#) , 004:Black onyx oil stone(1500#) , 005:Ruby oil stone(3000#) , 006:White agate oil stone(6000#) , 007:Diamond oil stone(8000#) , 008:Emerald oil stone(10000#) Package Included: 8pcs Sharpening Stones