Intelliware Solar mounting grouding screw enable the fast installation for ... , it could enable the fast installation for big solar farm.the grounding screw are suitable for most following ... Sand, gravel,silt.2) Flowing sand: Liquid and muddy ground water.3) Friable soil: Loose sand, Gravel or mixed. ... with high structural strength jointed and weather-defined. Solar Mounting Grounding Screw-K160076S