G'day Maurice,
Not sure what year these parts are from but looks like a new Water Pump Impeller kit for a McCulloch outboard .
Possibly for a 5 to 9 hp motor.
I would usually search eBay USA for a matching impeller but that may take a few months until someone advertises the
same one for sale.
There is Facebook McCulloch outboard group here you could ask them , probably would need to know the shaft size.
https://www.facebook.com/groups/270227303118468/posts/2259095057565006/Cheers
max.