and the  commercial shoulder strap kit of 2 shoulder pieces and plastic "I" pieces that slip through the top part of the rigid piece with the handle on it and secure with a rivet.

The complete harness is a different number and there are a couple of versions, depending which one you have.

These are made by Origin, and will suit many brands of backpack vacuum cleaners such as Pullman and the Nilfisk-ALTO Powervac

At the moment, standard postage is capped at a maximum of $25 within Australia, so maximise the saving on postage and buy something in the related parts below!