Stainless steel chain adjuster with genuine shape.
Stainless steel nuts are also 0.5 inch (12 mm) / 0.4 inch (10 mm) on opposite sides of the original size.
Compatible genuine model numbers (adjuster unit).
R Side 40543-K88-L00/40543-KZV-J00 (Hole Diameter 0.5 inch / 12.5 mm)
L Side 40544-K88-Y00/40543-KZV-Y00 (Hole Diameter 0.6 inch (15.5 mm)).