Seatylock Mason
The Seatylock Mason is the world’s lightest Sold Secure Gold U-lock. Unique triangular 17 mm crossbar for best strength / weight ratio. Double deadbolt locking mechanism for protection against twist attacks.
The Mason U-locks are a family of small and mid- size U-locks characterized by their unique features. The Mason comes in two different sizes: a mini 140 mm model and a mid size 180 mm model.
Both Mason models are Sold Secure Gold certified with a 16/18 internal security rating by Seatylock. The Mason features a unique 17 mm triangular shaped crossbar that is 30% stronger than parallel circular shaped crossbars and a double thickness body plate that provides added security for the most theft vulnerable part of U-locks. This exceptional design provides an ideal ratio between strength and weight. *Mounting bracket is sold separately. Read more about Seatylock.
Lock Geometry
