Railroad derail gate used to alert train crews to engaged derail on track. Mounts to hi-stand style square (Racor) or round (Western-Cullen-Hayes) 1.25" masts. 1 3M High Intensity Prismatic reflective sign (10" Derail Round) included that mount to end of gate over gage of track. 98" Gate length on standard gates (custom lengths can be ordered by phone).