This is a universal 52mm gauge pod to fit popular automotive guages such as AEM, Innovate and Glowshift. I reccommend using supports and a brim or raft depending on how well tuned your printer is. The pod fits most 52mm gauges, shallow or deep mounting, and has a flat face on the inside to mount with the clamp that most gauges use. The pod is mounted using #8 bolts or M4 bolts. The hole spacing is 3.0". Please do not share the STL with anyone else and have fun printing!