I've used these on a 62 ferrari 250 GTO and they are awesome. The instructions tell you that there is a spacer in the center of the wheel that you will add two spokes on one end at a time. You will need to put these on-top of each other, facing in opposite directions to get that spoke look. Once you have these super-glued, then do the other side the same way making sure to face the spokes in opposite directions from one another for that 3D look. Once these are dry then slide the whole assembly into the wheel and glue into place. There should be a center cap that you will add on after you have them glued onto the chassis, or at final assembly.