The Scalextric C8278 Radius 1 Curve 22.5 Deg (x2) are great if you are looking to add some directional changes into you Scalextric layout, they can be used to represent a small obstacle on what was once a high speed section of track or to create a tricky infield section which requires carefull driving and care. radius 4 being the subtle and radius 1 being the most aggresive curves in the Scalextric range at the moment.Manufacturer: ScalextricModel: C8278 Radius 1 Curve 22.5 Deg (x2)