... groove, 2) single or double bearing.3) diameters: 50, 60, 70, 80, 90, 100,120,140mm4) white or gold zinc plated5 ... parties applied to the Sliding Gate, Cantilever Gate, Hanger Gate/Door, Driveway Gates, Swing Door/Gate, Retractable Gates, Rolling Gate and the Fences etc. We ...