Mason 140 U-Lock

The world's lightest secure diamond-shaped U-lock. Unique triangular crossbar profile for a better strength-to-weight ratio. Double deadbolt locking mechanism for protection against twisting attacks. The metal and plastic parts are treated to resist rust and UV damage.

The Mason 140 lock is certified 3 stars by ART.

*The mounting bracket is sold separately.

Technical data:

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

The kit includes: lock, two stickers, 3 keys.

Warranty Seatylock:

• All Seatylock products come with a 6-month original warranty, which extends to 3 years when the customer registers their keys on the Seatylock website.
• To claim the warranty, the customer must register their key numbers on the Seatylock website:
• On each Seatylock key set, there is a label with two codes: a code A and a code B. These codes are necessary for registering the key and claiming the warranty, and they are very important. Registering the key numbers also allows for a duplicate of the keys to be created if they are lost.