XENA XX15-SS Stainless Steel Disc Alarm Brand-new design with a flared, attack-resistant body shape Straps to your brake-disc like a well-fitted glove High nickel-content stainless-steel mono-block construction and piercing alarm Shorter, squatter body gives it a sport and streetbike-oriented fit profile 14mm double-locking, carbide-reinforced hardened-steel locking pin