Xena XX15 Disc Lock With Alarm An extremely strong lock body and piercing alarm make the high-performance XX15 a remarkably effective way to protect your motorbike. Lock High nickel-content stainless-steel mono-block construction with a broad fit profile and 14mm (9/16) double-locking, carbide-reinforced hardened-steel locking pin. Freeze-spray resistant, pick-resistant key and barrel. Alarm Shock motion sensors trigger a piercing 120dB anti-theft alarm powered by a single CR2 long-life Lithium battery. Self-arming, with no on-off switch, re-sets to armed mode within 15 seconds. Features 2 3/8 (60mm) throat width 9/16 (14mm) diameter carbide-reinforced hardened-steel locking pin 100 stainless steel Total corrosion resistance Double-locking system Maximum security key barrel Freeze spray-resistant key barrel Ultra-high strength 120dB alarm Auto arm/disarm Shock movement sensors Removable alarm module Weight 740g Includes 1 XENA Disc-Lock 1 CR2 Battery 3 Keys 1 XENA Lock Tool Etched with Unique Key Code Please Note Battery comes pre-installed in lock.