The AES 16 nozzle can accommodate exhaust pipe diameters up to 100mm diameter. Connection is effected by simply pushing onto the vehicle exhaust and allowing the central part of the exhaust to open up and self grip. Two models available can provide both open and self-sealing options. AES offer an exclusive totally crushproof double diameter (75mmm and 100mm diameter) rubber reducer that replaces old metal inserts that can be easily crushed by operators or vehicles.