China Zinc Alloy Motorbike Brake Disc Lock Part Provider Junying Offers Anti-rust Brake Disc Lock Parts for Scooters, Motorcycles, Autocycles, Bikes. Basic Info. Name: Zinc Alloy Motorbike Brake Disc Lock Part. Material: Zinc Alloy. Certificate: ISO 9001, ISO 14001, TUV Certified. Surface Treatment: Spray Coating, Anti-rust Treatment. Colors of Sample: Yellow. Application: Motorbike, Scooter, Motorcycle, Autocycle, Bike, etc.