Basically what the title says, it's a thermal cannon count-as modelled off a rough approximation of a jet engine, compatible with GW's plastic knight range. Includes a left-side panel version, a right-side panel version, and a bare piping version. One solid piece, I printed mine at a 45 degree angle in an Anycubic Photon. I recommend a lot of supports, it's a hefty one. I got pretty good results with auto supports with the settings: 5% heavy, 15% medium, 25% light. Contact me me you have any questions, happy to help!