The Screw,tap 4x25 is the lowest priced item on this Winker (1) schematic.
A sample from the products for the Winker (1) include: Bulb 12v21w, Stay Comp,winker, Bolt Socket 6x28, Winker Assy.,r Fr.
This Winker (1) diagram displays the required parts for the Gl1500c Valkyrie 1997 (v) Austria Winker (1).