(1) Be compatible with various friction bolts as an important part in support system. (2)They are complementary products and assists in overcoming the problem of minor surface angularity (3) Corrosion protection may be provided by hot dip galvanizing (4) The Domed Plate and Dome Ball assembly provides up to 180 angle of tilt , has \'user friendly\' rounded corners.aa Property of Mining Domed Plate