The file 'Improved Neck Steam Train Whistle Feat. MikeP-NZ 3D Printer Model' is (stl) file type, size is 2.1MB.
Made better version to more comfortably annoy car drivers while riding my pollution/noise-free bicycle.I added some cuts and a protrusion for better grip with teeth and a hole for thread.Thanks to MikeP-NZ.Enjoy!