Design with three longitudinal zigzag patten goves provides

water drainage perfomance in wet oad and excellet steer-ability

on snowice road.

Design with bg patten bock outside provides enough rgidity and

excellent steer-ability.

Design with multiple crossed patten inside enlarges snow hoding

capabity and strength of snow column, and enhanced the grp

capability.

The fine sots in the pattem reduced the hiting noise, the zigzag

slots diftsed the noise frequency, making the noise even in

various frequency waves.