Features: 1) With a ball joint housing, a sphered convex inside surface and a ball joint shank with a correspondingly sphered but concave outside surface 2) Ball joint housing is made of zinc base alloy, ball joint shank is made of a steel ball and a stud, which is joined by precision welding, stud with left or right-hand male thread 3) Self-aligning, wear-resistant and easy mounting properties 4) Ball joint housing of series SQ-Rs and SQZ-RS, axial shank with left or right-hand female thread 5) Ball joint rod ends: a) SQZ RS b) SQ RS c) SQD Spherical Plain Bearing Features: 1) Outer ring with single split in axial direction 2) Lubrication grooves and holes in the outer and inner ring of type ES 3) Outer ring of type 2RS, with 2 seals 4) Both outer and inner rings are properly treated