Product name: Bicycle lock Disc brake lock Product size: 45*33*5*8mm/1.8*1.3*0.2*0.3in Suitable for: motorcycle electric bicycle with disc brake Disc brake hole diameter >5.5mm0.21in Product material: Alloy steel Product features: 1.Disc Brake Lock for Bicycles: This disc brake lock is specifically designed for bicycles, providing a convenient and quick way to secure your mountain bike or electric bike. It effectively prevents theft and ensures the safety of your valuable ride. 2.Secure and Reliable: Made from durable and robust materials, this lock offers reliable protection for your bike. It securely attaches to the disc brake, preventing the wheel from rotating and making it difficult for thieves to ride away with your bike. 3.Convenient and Portable: This lock is lightweight and compact, making it easy to carry with you while cycling. Its small size allows for convenient storage in your backpack or bike bag, ensuring that you always have it handy whenever you need to secure your bike. 4.Versatile and Adjustable: This disc brake lock is suitable for a wide range of bicycles, including mountain bikes, electric bikes, and motorcycles. Precautions: 1. As we all know , the different computers display colors differently, the color of the actual item may vary slightly from the following images. 2. If you feel difficult to choose the size, you can feel free to contact me we will give you some suggestion, but it is for you reference only. Shipment includes: 1 pc lock with two keys