1.used to polish,sharpen household tools 2.high working efficiency ... 5.eco-friendly package diamond sharpener/diamond stoneModel No.: BF-SH20311. Sizes: 1"X3"2. Grits: 200#, 300#, 400#3. Application: Efficient ... sharpening of household tools, such as scissors, knives,etc. 1.used to polish,sharpen household tools2.high working efficiency3.long ...