OUTERDO Security Bicycle Chain Lock 4-Digit Combination Password Steel Cables Bike Lock 26 Inch 4 character password is very secure, because the possible combination: 100 thousand. The most secure and easy to use bicycle combination cable lock. Ideal for everyone and Ideal for bicycles, skateboards, sports equipment, gates & fences, grills & lawnmowers, tools, tool boxes & ladders. Lightweight chain with flexible steel cables for strong cut resistance.Plastic pipe is durable, not easily to be scratched. Attention the lock's password is fixed ,cannot be changed, so must be not forget the password When you order our bike lock today, you're protected by our 30-day "no-questions asked" 100% Money Back Guarantee!