Specialized use at concrete ground,pavent, brick ground, etc
This is cleaner of weed on concrete and mud on concrete　　　　　　　　　　　　　　　　　This can not be used for mowing in the soil surface.

With changes in lifestyle, it is a situation that the road and the ground are laying a hard stone.
There are collects sludge and moss and weed for The long years.
This is a blade to remove it.

This is not an evolution version of the chip saw!
This is the blade which can be used in a concrete face!