The safest and lightest U-lock in the world. Unique triangular cross-section profile for the best strength-to-weight ratio. Double-locking mechanism for protection against rotational attacks. Metal and plastic parts are treated to resist rust and UV rays. The Mason 140 lock is certified with 3 stars by ART.

Technical specifications:

• Shackle thickness: 13.7 mm
• Materials: hardened steel and silicone
• Shackle dimensions: 14 x 8.5 cm
• Weight: 0.97 kg
• The triangular profile of the shackle is patented and offers the best strength-to-weight ratio.

Included in the package: lock, two stickers, 3 keys.

Seatylock warranty:

• All Seatylock products come with a factory warranty of 6 months, which can be extended to 3 years if the customer registers their keys on the Seatylock website.
• To claim the warranty, the customer must register their key number on the Seatylock website.
• Each Seatylock keyring has a label with two codes: a Code A and a Code B. These codes are for key registration and warranty claims, and they are very important. Registering the key numbers also allows for the creation of a duplicate in case they are lost.