Iztor Motorbike Motorcycle Scooter Security Anti Thief Wheel Disc Brake Alarm Lock yellow Water Proof, Built-in 120dB Alarm System, Won the TUV,CE,CLASSE,SRA international certification Super class B lock core,the lock core Mercedes Benz cars strong anti. Long Battery Life, Alarm Function Selection,include 2 keys ,1 bag and 2 vent caps. Material: stainless steel,Size: 6*8.6*3.3 cm Weight:560g