This is the bare pump rod for the pump actuation lever on the Dellorto DHLA series carburetors.
This is normally part of the assembly as shown in # 90 in the drawing but is now also available separately.
The spring pin will need to removed from the cast alloy clamp to enable this to be fitted.
Required quantity per carburettor: 1
This is part of item number 90 in the drawing.