This is a grille to replace the stock factory one that comes on the Hammer Rey. It has a more scale look to match Casey Currie's car. It is 3d printed using Atomic Filaments Carbon Fiber PETG. You will use the four factory screws to mount it just like the stock one and the lenses and LED slide right in (keyed just like factory to keep lenses straight). I simply use a couple dabs of E6000 to hold them in. If you have any questions or problems just send me a message and I will be happy to help.