About the Product:

Heavy-Duty Alloy Steel U-Lock with Dual-Sided Security & Silicone Protection

• HEAVY-DUTY ANTI-THEFT SECURITY
  The ROCKBROS bike U-lock is built from high-quality steel and strengthened through vacuum heat treatment, making it extremely difficult to cut with common tools. With a max diameter of 22mm and a weight of 1.76 lbs (0.8 kg), this lock provides solid, reliable protection for daily use.
• DURABLE, HIGH-SECURITY LOCK CORE
  The precision-engineered lock core uses a unique key design to resist lock-picking and technical opening. A protective dust cover and durable cylinder extend the lock’s service life, keeping it working smoothly over time.
• EASY-TO-CARRY MOUNTING BRACKET
  Sized at 8.27 × 4.33 inches (21 × 11 cm), the U-lock comes with a mounting bracket that attaches directly to your bike frame. It keeps the lock secure while riding and makes it convenient to take with you on every trip.
• STURDY, BIKE-FRIENDLY DESIGN
  The lock is wrapped in a thick silicone coating to prevent scratches and withstand daily wear. Suitable for road bikes, mountain bikes, e-bikes, commuter bikes, and even for securing gates or fences.