MW-5 Brass Steam Whistle 1/4x40 TPI M8 M6 Adjustable Tone

This whistle supports multiple thread adapters, including 1/4" × 40 TPI, M8×0.75, M6×0.75, and 1/4" × 26 TPI. 1/4" × 40 TPI, M8×0.75, M6×0.75, 1/4" × 26 TPI. The MW-5 Brass Steam Bell Whistle is designed for live steam model applications.