The sharpener has a reasonable design and construction, Whether ordinary flat or serrated knife blade can cause the light to create a subtlety high blade .
Whetstone is made ( high Lu porcelain ) Material Tempered , its hardness can be polished any metal objects known to mankind .
For the purposes of mineral hardness standards . They are 9 Mohs hardness ( up to 10 ) .
Both fine and medium sand, do not need lubricant such as oil or water can be used to sharpen.
Medium sand whetstone life of at least 3-5 years ( depending sharpening frequency dependent ) , while the sand grindstone longer life , and can even be done without wear.
High numbers white Sharpener 2
In numbers yellow sharpener 2
Gauntlets of copper rods 2
High hardness plastic storage box a base