Limited appeal this one, it's an overflow bottle holder (catch can) designed to fit on the front fairing stay of a Honda VFR400R NC30 for racing purposes.
It's designed to hold 2 x go-kart overflow bottles and be held in place with 2 cable ties around the fairing stay tube in front of the speedometer bracket.
Use a cable-tie through the slots in the front of the "arms" to hold the overflow bottles in place.
If you print and use it, please post a pic of your racebike :)
Designed to be printed without supports but may need some under the cable tie grooves.