NEW Genuine Vauxhall Dual Washer Jet to fit :-

Vauxhall Viva HC     (early models)

For early cars that have one jet mounted in the centre of the bonnet,   with two squirt holes. 

(Later HCs had two mounting holes in the bonnet for two jets, one either side with only one squirt nozzle in each.)

Note : I found that the plastic can be trimmed down on the sides in order to fit this jet into the smaller hole to be used in the bonnet of the Viva HB.  
 
Very rare item.