Easy Fit Car Vent Mount for TomTom START 20 (sku 19222) Unique 'easy fit' vehicle air vent mounting solution suitable for the TomTom START 20 & 25 GPS SatNav system. Simple to install and suitable for most horizontal and vertical air vent slats - single spring arm attachment system can be rotated to suit. Fitting requires a gap of 6mm (") between louvers with a louver maximum depth of 30mm (1.19"). Vibration dampening support ball offers 360 off set positioning to ensure the optimum viewing position is securely maintained . Cushioned support feet also act to reduce vibration against the console area. Soft coated ball fits directly into the back of the GPS TomTom unit in the same way as the original mount attached. What do I get? 1 x easy-fit air vent base; 1 x ball attachment system. (GPS unit not included.)