Motorcycle disc lock MK619, with 110-120 decibels electronic alarm system, mainly made of zinc alloy, copper, high material strength, effectively plays the function of dust-proof and waterproof, equipped with a high-security key system, theft prevention, can be used on motorcycles, bicycles is a good choice for going out riding.
https://www.makemotorlocks.com/product/motorcycle-disc-brake-lock-mk619/