A ground surface slide guide attached to a grass cutter is of light weight and has a large diameter and superior durability, enabling comfortable grass cutting work. The ground surface slide guide has a resin body made of synthetic resin, and a metal hub integrally coupled thereto to rotate together. The resin body is composed of a tubular body and a flange extending upward to the outside from the entire periphery of the lower end of the tubular body and covering the lower surface of the rotary blade. A blade retaining ring pressed against the lower surface of the rotary blade is formed on the outer periphery of the hub, and the blade retaining ring is exposed to the upper end surface of the tubular body. The hub is attached to a drive shaft by a fastener, and the rotary blade is clamped between a blade rest and a blade retaining ring. The lower end of the tubular body serves as a ground contact surface. The metal hub is integrally coupled to the resin body to rotate together. The overall weight is reduced by the resin body, and the lower surface of the rotary blade can be covered over a wide range, thereby improving stability with respect to the surface of the ground. In addition, since wear resistance performance is enhanced by making the thickness of the lower end of the tubular body serving as the contact surface that contacts the ground greater than the thickness of the flange, the durability of the ground surface slide guide can be improved.
