Thomas Saf-t-liner Hdx 1/54 Scale Custom lettering of School name and bus number enter None if no lettering desired. Spell, Capitalize, etc carefully. What You See Is What You Get. Lettering can be any text up to 30 characters 1/54 Scale, 8.5 x 2.5 x 2 inches approximate size Not suitable for children, this is a collectors piece.