Tin toy key Windup Key 1" shaft length 1/8" square shaft opening.

Replacement generic Tin Windup Key, 1-3/4", Standard Size. Fits : Technofix Alpine express. Keys may differ from the picture slightly but all have the same dimensions. Key has 1" key shaft. 1/8" square shaft opening 2.75mm/0.28cm or .11" or 1/8"