This is a 3D printed housing for the internals from a VEX/CTRE versaplanetary encoder (P/N 217-5046). It lets the encoder bolt directly to a versablock on a west-coast style chassis. This design was fielded successfully on Celt-X 5406's 2017 robot, although it has been slightly modified from the one pictured. Use a small amount of non-conductive grease between all moving parts. Design credit goes to Kestin Goforth.