The aluminum shackle lock is popular with cyclists and has evolved into the original round (curved) shape and appeared in October 2017.
The U-shaped arm has a round (curved) shape to eliminate discomfort when put in the back of the pants and greatly improve portability.
In order to prevent size down due to the round (curved) shape, the size is 0.6 inch (15 mm) larger than conventional products, and the locking range is slightly improved (inner dimension: 5.7 x 3.0 inches (145 x 75 mm).
Lightweight and durable aluminum body and U-shaped arm
Elastomer resin cover prevents scratches on the vehicle
The cylinder uses a round key that is tamper-unlocked (3 keys included).