These were fitted to all Reliant Rialto and Robins from approx 1982 onwards.

Easy way to tell is you should see the circlips on the ends of the kingpin on your stub axle. They might be covered with silicone. 

Our kits have the correct bearings with the holes in for the grease to get into the bearing plus a FULL set of rollers!! 

The other cheaper kit available from other sellers on eBay has the incorrect bronze D pieces and they will not fit! 

Ours is the only correct kit for sale!