Disc lock with 120dba alarm and warning device, it has a universal 6mm shaft, ideal for the outer holes of the disc. Compact size with metal body and lid with anti-oxidation treatment. Designed to be the most universal and the only one also valid for vespa px. You can use it with or without an alarm; It has the warning / reminder / anti-forget function differentiated from the alarm function to save inconvenience and extend the life of the battery, with this built-in electronic alarm you don't need to waste time with the reminder cable. Double alert signal: with luminous led button very useful for dark places, plus the powerful 120dba alarm. The alarm module is replaceable, highly waterproof, reliable and without false alarms; The CR2 type battery is a long-lasting lithium battery. The sek “click” lock that allows you to close it quickly with one hand and without a key. Made in Europe to offer better quality and a local after-sales service. If you have larger holes on the inside of the disc to place a 10 mm shaft, we recommend the artago 30x10, which is a high-end model with much higher resistance.