NDakter Bike Lock, 5 Digit Combination Heavy Duty Anti Theft

Product Overview

The NDakter Bike Lock delivers robust security for cyclists and outdoor users who demand both durability and convenience. Designed as a heavy-duty anti-theft bicycle chain lock, it combines a 5-digit resettable combination mechanism with a drill-resistant alloy steel core to provide protection against common theft techniques. Unlike traditional keyed locks or simpler 4-digit models, this lock offers enhanced resistance to tampering thanks to its zinc alloy cylinder and reinforced chain construction. Whether you’re locking your bike in the city, securing a scooter at a campsite, or anchoring a grill in your backyard, this versatile lock adapts to a wide range of scenarios without sacrificing strength.

Key Features

• 5-Digit Resettable Combination: Enjoy keyless access with a personalized code that’s easy to set and change anytime. With up to 10,000 possible combinations—far exceeding standard 4-digit systems—the default starting code is 00000, giving you full control over your security setup. This feature is especially valuable for shared spaces like apartment buildings or rental properties where multiple users need distinct access codes.
• Heavy-Duty Zinc Alloy Cylinder: The lock’s internal mechanism is forged from high-grade zinc alloy, significantly improving resistance to picking, drilling, and forced entry compared to cheaper plastic or aluminum alternatives. This upgrade ensures long-term reliability even under repeated use or exposure to harsh weather conditions.
• Drill-Resistant Alloy Steel Chain: Constructed from 0.24-inch thick alloy steel, the chain withstands physical attacks such as bolt cutters and drilling attempts. Its hardened composition makes it difficult for thieves to compromise the lock through brute force, offering peace of mind whether you’re parking overnight or leaving gear unattended during the day.
• Scratch-Proof Fabric Covering: Wrapped in premium polypropylene fabric, the chain protects both your bicycle frame and surrounding surfaces from scratches and wear. The material also resists temperature extremes—staying grippy in cold weather and remaining smooth in heat—ensuring consistent performance year-round while extending the lock’s lifespan.
• Multiple Length Options: Choose from five practical lengths—2.62ft, 3.2ft, 4.27ft, 5ft, and 6ft—to match your specific needs. Whether you’re locking two bikes together, securing a bike to a fence post, or wrapping around irregular shapes like grills or ladders, there’s a size that fits your situation.
• Multi-Purpose Design: While optimized for bicycles, this lock works equally well on motorcycles, scooters, skateboards, doors, gates, lawnmowers, and other outdoor equipment requiring secure anchoring. Its flexibility makes it ideal for homeowners, campers, delivery riders, and anyone needing reliable portable security.

Technical Specifications

• Lock Type: 5-digit resettable combination chain lock
• Chain Material: 0.24 inch (6mm) alloy steel
• Cylinder Material: Zinc alloy
• Available Lengths: 2.62 ft / 3.2 ft / 4.27 ft / 5 ft / 6 ft
• Fabric Cover: High-quality polypropylene (scratch-proof, wear-resistant)
• Default Code: 00000
• Total Combinations: Up to 10,000
• Weight (approx.): 1.45 pounds (for 3.2ft version)
• Lock Head Diameter: ~1.25 inches (3.2 cm)

Benefits & Use Cases

This bike lock shines in environments where accessibility and security must coexist. The resettable code eliminates the risk of losing keys and simplifies management in multi-user settings—ideal for families, office bike racks, or rental units. Users can quickly change their code if they suspect unauthorized access or simply want to update credentials without replacing the entire lock.

Its adjustable length options make it exceptionally useful for urban commuters who park near lampposts, fences, or railings, as well as for recreational users securing bikes to trees or gates in parks. The fabric-covered chain prevents paint damage and reduces noise when moved, making it suitable for indoor storage or quiet neighborhoods. Despite its solid build, the moderate weight ensures it remains portable enough for daily use without being cumbersome.

Beyond cycling, the lock’s adaptability supports diverse applications: motorbikes benefit from its strong chain; scooters and e-bikes can be anchored to fixed objects; grills and ladders stay put during events; even doors and gates gain added security. Its ability to conform to curved or angled structures gives it an edge over rigid U-locks in tight or unconventional spaces.

Important Notes

While the lock head measures approximately 1.25 inches (3.2 cm) in diameter—wide enough to fit through most standard bike wheel gaps—it may not work with vehicles featuring smaller openings. If your scooter, e-bike, or other device has a wheel gap less than 3.2 cm, threading the lock through the hub isn’t feasible. In such cases, wrap the chain around the frame or handlebars instead, ensuring sufficient tension to deter casual tampering.

Always follow basic safety practices: never leave your bike completely unattended, especially in high-risk areas, regardless of how secure the lock appears. Visual deterrence plays a crucial role in theft prevention, so consider parking in well-lit or monitored locations whenever possible.

The package includes one NDakter Bike Lock in your chosen length, fully assembled and ready to use. No tools are required to set or reset the code—just follow the included instructions for immediate deployment.