Sometimes when using different manufacturers adapter hubs and steering wheel it is necessary to rotate the steering wheel slightly to get everything to line up.
The Grip Royal 10mm Rotator Spacer is used to correct steering wheel orientation while using a 6-bolt (70mm pattern; excluding Nardi/Personal) hub adapter by any other manufacture.
Install your Momo/Sparco/OMP/NRG/Boss/Splash/Worksbell/etc 6-bolt hubs as they were originally intended followed by the rotator spacer to bolt your Grip Royal steering wheel on straight without any additional complications.
Also, their spacer’s inside diameter is small enough to allow their horn button to be held without the use of a horn-retainer-ring. They have placed their ‘ROYAL’ logo on the top facing the driver to match their other products.