Introduction to U-shaped locks on bicycles

U-shaped lock is a common bicycle lock that is usually made of sturdy metal material and presents a U-shaped shape. The selling points of this lock include:

1. High security: U-shaped locks are made of sturdy metal and are difficult to break or pry open, providing high security.

2. Easy to use: The U-shaped lock is easy to use, just lock the bicycle wheels and frame together.

3. Durable: U-shaped locks are typically made of durable materials that can withstand prolonged use and harsh weather conditions.

4. Easy to carry: The U-shaped lock is relatively lightweight, easy to carry, and suitable for daily cycling use.

5. Multiple sizes and styles: U-shaped locks come in a variety of sizes and styles to choose from, suitable for different types of bicycles and usage scenarios.

Overall, U-shaped locks are a popular bicycle lock because they provide high safety, convenient use, and durability.