For mudstone.Sharp edge of this flat blade can be used to excavate hard ground such as clay easily.unlike usual flat blade.Do not use it for cobblet stone and coarse fragment,because its edge is sharp.
Point
E-50KYN
50~80~210
50~30~25.5
It can be used to deal with mudstone with flat blade or top of sword.
Point
E-50KIY
50~80~214.5
50~25~45
Insert-type sword is equipped with chip to prevent side wear.It can be used in severe spot.