The 15V 1.2 Amp UK wall plug transformer for use with standard analogue Scalextric sets and Start Scalextric Set. This transformer has a square end and is used in conjunction with the Scalextric Start powerbase and the C8530 Power Control Base. Please check your powerbase before purchase. Please note: this transformer is not compatible with Scalextric Digital, Micro Scalextric, or Hornby Train sets.