The and the and the Nilfisk GB826 and the and the side arm bride kit, comprises parts for just ONE side. Curved spring, spring bottom bracket and top part of bracket into which the "bride" fits secured by the R pin.
The R pin isn't included in this kit, it's in kit SKU 32213200. I do have some R pins.
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!