Scale Auto guide keel ProSport 2 ST.

3/16 "nylon guide keel without nut, thread available for scale 1: 24/27

(similar ProSport, only slightly longer and thicker, so the guide keel comes closer to the train)

The upper mounting pin is 3/16 "(about 4.76 mm) in diameter. This is standard on nearly all metal chassis (Plafit, Scholer, etc.).

Length 27.5 mm, depth 9 mm

For wood panels with deep slot