This is a reproduction of the model for bridge rails (guards?) for a BRIO turntable like the one used in "Thomas & Friends Wooden Railway Deluxe Roundhouse". The stl file is only the orange rails shown in the picture, not the entire turntable. My young cousins had managed to break the pegs off the bottom of their set and I was happy to model the part and print them some new ones. Don't worry, the Orange part shown here was the prototype. When perfected I printed it in Grey PLA that was a reasonable match.