Hiboy Bike Combination U-Lock, Anti-Theft Security Bicycle Lock with Mounting Bracket, 10mm Steel Shackle U-Lock for Scooters & Bikes

Easy to use. Great lock.

The Hiboy Bike Combination U-Lock is a solid choice for securing bikes and scooters. Its 10mm hardened steel shackle offers dependable protection against theft, and the built-in combination lock eliminates the need for keys. The mounting bracket makes it easy to carry on rides, adding convenience without bulk. Ideal for urban commutes or casual riders, it strikes a good balance between portability and security. While it may not withstand high-end power tools, it provides peace of mind for day-to-day use. A great value for those looking for reliable, basic bike protection.

Very solid U-lock from Hiboy — feels sturdy and reliable. I like that it has both a combination code and a backup key, just in case. Easy to set up, and it comes with a mount for the bike. Great value for the price!

It works exactly as a lock should, however the scooter mount loosens and begins to raddle over time.. I tried to fix it but it's just a cheap plastic and there's nothing to be done. The shackle is also not as wide as others of comparable or cheaper price, which can be frustrating sometimes.

First thing first, … Hiboy did NOT design the keys to open the lock. I discovered that one can ONLY open the lock using the combination password. The primary purpose of the keys is to help you retrieve a lost password which is originally set at “0000.” The second thing is that to reset your password you need to press the RESET button. Press this button HARD. You need to press this button hard enough until you see two pins protruding about 3/16 of an inch on the surface that is parallel to the surface where one would insert a key (the area between the two U-mount bolts). The enclosed instruction sheet does not thoroughly address the two preceding points. The instruction sheet spends an inordinate amount of time discussing the installation of the storage bracket on a bicycle seat post or frame. The installation of the lock on a bicycle seat or frame appears to be an uncomplicated process that requires less explanation. I was able to change/reset the code, after spending about 12 minutes of time that I have lost to the ages to figure out the lock/unlock protocol. I find that the tumblers on the combination lock to be too difficult to turn so if I ever must make a quick getaway I am cooked. Anyway, this scenario is not in the cards for me – I intend to use this lock on my lawn equipment. I will keep the keys handy but knowing that they only serve an “as needed service.” I will not sweat keeping up with the keys because if I forget my lock combination – it will mean that it is time to hang up my spurs and enjoy my remaining years watching the grass grow. Overall, this is a decent quality lock with a security level of eight. There is no real standard regarding security level, but I would place this lock in the moderate to high security level range.