Mammoth Security Gremlin Alarm Disc Lock – 6Mm Stainless Steel Pin (Fluoro Yellow)

The Mammoth Gremlin is an alarm disc lock with a 6 mm stainless steel locking pin and a motion-sensitive 120 dB alarm. Its motion sensor activates the alarm when movement is detected.

The weather-resistant body has a key lock and a fluoro yellow finish. It fits most motorcycle disc brake rotors and comes with keys and batteries. Security devices cannot prevent all theft; research shows that locks and chains used together with a cover are effective deterrents.