The Cupids Rangers Heart Shoulder Pads Symbol are designed to work with primaris and traditional space marine models. They are designed so you can easily use some glue and use putty/filler to add them to an existing shoulder pad, and then the raised symbol makes painting easy. They come in a set of 64 and are designed to easily snap off or using a set of clippers. Then prime them and glue them to your model. Any gaps due to differences in the shoulderpad and the symbol can be handled with putty/filler.