Reliability and durability Built from dense zinc alloy to protect internal components and maintain consistent locking performance in tough environments. Keyless convenience 4digit keyless password system replaces traditional keys, simplifying daily use for bicycles and motorcycles. Intuitive presstolock and presstounlock operation for quick, easy access. Strong access security Antitheft encryption with thousands of code combinations to deter unauthorized access. Allweather performance Dustproof and waterproof design resists rust in wet or sandy settings. Robust construction withstands temperature changes and environmental stressors. Applications and compatibility Designed to secure brake discs on bicycles and motorcycles, offering a reliable locking solution for twowheel users. Use scenarios City commuting: lock your bike at work or school; quick to set and remove between trips. Parking a motorcycle: secure the front brake disc at shopping centers or transit hubs to deter theft. Outdoor trips: use in dusty, sandy, or wet environments during road trips or beach outings where weather exposure is likely. Specifications and key attributes Material: zinc alloy Password system: 4digit keyless code Security: thousands of code combinations Conditions: dustproof, waterproof, rustresistant; handles temperature variation and environmental stressors Note: This lock is intended for brake discs on bicycles and motorcycles and emphasizes reliability, security, and weather resistance without relying on keys.