ü Concrete test molds made of plastic composites due to lightweight and less expensive, alternative forms of iron are present.
ü Metal blade to avoid transformation
ü Body with vertical and diagonal grid for increase strength
ü The rapid opening and closing with no bolts
ü All concrete water storage
ü Perfect concrete water storage
ü Reinforced strong fuselage With extra appendages for saving the use of the hammer to separate the theme of concrete
ü which not only has more strength of HIPS materials but also has smooth internal surface reverse.