Universal Car Engine Start Push Button Switch Ignition Starter Kit - Blue LED DC: 12V (Fits for all vehicles) Dimensions: Outer Diameter for the ring - 3.7 cm (Dia) / 1.46 inch (Dia) Inter Diameter for the hole - 3.0cm (Dia) / 1.18 inch (Dia) Cord length: Starter switch - approx. 100cm / Relay box - approx. 40cm