U-Lock MAGNUM MGN-3105 bike lock, hardened steel shackle, compact security design

MAGNUM MGN-3105 is a U-lock designed to secure bicycles and scooters with a hardened steel shackle and compact security body. Its construction focuses on basic resistance to cutting and leverage attacks while remaining easy to carry and use for daily urban riding, commuting and short-term parking. The lock is intended to be paired with a fixed anchor point to protect frames and wheels during routine stops.

Advantages

The hardened steel shackle increases resistance to manual cutting tools and sawing, while the compact design reduces exposed leverage points. The locking mechanism provides straightforward operation for quick locking and unlocking during frequent stops. The lock's size and weight balance portability and security, making it convenient to carry on rides without large mounting brackets. The body finish helps reduce corrosion and wear from regular outdoor use.

Suitable for

• Securing bicycles during short-term parking in urban environments
• Locking scooters and small electric bikes while commuting
• Supplemental security when paired with a fixed anchor or chain
• Everyday use for school runs, errands, and public transport stops

Key specifications

• Shackle material: hardened steel for improved cut resistance
• Design: U-lock (D-lock) with compact security body
• Suitable applications: bicycles, scooters, small e-bikes
• Operation: manual key lock mechanism with straightforward use
• External finish: corrosion-resistant surface treatment

How to use

Position the lock so the shackle passes through the bicycle frame and, if possible, a wheel and a fixed anchor point such as a ground-mounted loop or sturdy pole. Insert the shackle into the lock body and turn the key to engage the mechanism. When unlocking, use the key to release the shackle and remove the lock. Regularly check the lock and key for debris, and keep the mechanism lubricated with a light graphite or silicone-based lubricant to ensure smooth operation.

Usage recommendations

For effective security, lock the frame and at least one wheel to an immovable object and avoid leaving the bike unattended in high-risk areas for extended periods. Combine the U-lock with an additional cable or chain if you need to secure both wheels separately. Store the lock in a dry location when not in use and perform periodic inspections to maintain optimal function.