Upgraded material Our bike locks are made of high-strength alloy steel, which is strong, resistant to cutting and shearing, and can withstand high torsion and tensile forces. A high-quality high-security bike lock ensures the safety of your bike. Ingenious design The bike lock weighs 740 grams and has a total length of 85 cm. It consists of 26 joints that can be rotated 360 degrees. After folding, it is only 6.6 x 7.5 x 5.5 cm (L x W), which can be directly gripped with one hand. The shell is made of ABS plastic, which perfectly protects the bike from scratches. Portable and easy to use The foldable lock with bracket can be attached to the seat post with non-slip Velcro, or it can be attached to the bike frame with screws. Once attached, the bike will no longer vibrate even on bumpy roads. You can easily release the lock to lock your bike, which is very convenient 3 keys included Bicycle lock for bike with 3 keys, you can take one with you for daily use and keep the other one at home in case you lose it. NOTE: The key can only be removed when the lock is in place. It is very suitable for mountain bikes, racing bikes, electric scooters, etc. and after-sales message: If you are not satisfied with your HONGYEA folding lock, you can return it without any reason within 90 days from . If you have any , please do not hesitate to contact us for advice.