U-lock MAGNUM MGN-3001 bike lock — hardened steel shackle, compact U-lock design

MAGNUM MGN-3001 is a compact U-lock designed to secure bicycles and similar personal transport. The lock features a hardened steel shackle and a cylinder locking mechanism in a compact frame that helps fasten a bike frame and wheel to racks, posts or other fixed objects. Its size and construction are intended for everyday use and commuting where a balance of portability and physical protection is required.

Advantages

The hardened steel shackle resists cutting and sawing better than untreated materials, while the compact U-lock design offers simple mounting and straightforward operation. The cylinder locking mechanism provides reliable engagement and key operation. The lock’s dimensions and weight make it practical to carry on short trips or attach to a rack or frame mount when not in use.

Suitable for

• Securing bicycle frames and one wheel to bike racks, posts or railings
• Commuting and everyday urban use where moderate to enhanced physical protection is needed
• Short stops at shops, transit hubs or schools where a compact, easily carried lock is preferred

Key specifications

• Lock type: U-lock (D-lock)
• Shackle material: hardened steel for improved cut resistance
• Locking mechanism: cylinder key lock
• Design: compact frame for portability and easy mounting
• Primary use: securing bikes and similar personal transport to fixed objects

How to use

Position the U-lock so the shackle encircles the bike frame and at least one wheel together with a fixed object such as a rack or post. Insert the shackle into the frame body and turn the key to engage the cylinder locking mechanism. Test the lock by gently pulling on the shackle to confirm it is fully seated and locked. Keep spare keys in a secure place and avoid leaving the lock exposed to coastal or highly corrosive environments without periodic maintenance.

Usage recommendations

For best results, lock both the frame and a wheel whenever possible and choose well-lit, visible locations. Combine this U-lock with a lightweight cable or chain if you need to secure additional components such as the second wheel or accessories. Periodically inspect the cylinder and shackle for wear or corrosion and lubricate the lock cylinder with a suitable graphite or silicone-based lubricant if operation becomes stiff.