I bought these for a Girl Scout Lock box challenge so the quality of the lock really didn't matter. I wouldn't trust valuable to this since it would be fairly easy to pop, however, for my purposes they were perfect.There were no instructions included on how to change the combination lock, but it was pretty easy to figure out (align combination to 000, open lock, use a sharp object (I used a pen) to depress button, change combo and lock lock). But might have had a challenge if I hadn't had directions from other style locks purchased for the Lock box challenge.These were affordable and met my needs.These locks are small and work as needed. The only issue is the numbers are a little hard to read. Must be in the right light at the right angle.I needed these for an escape room activity I put together for a youth group. For that purpose these worked great. It is a tad awkward to hold the little black button in with a pen while changing the code, but after a few tries it got done. I definitely echo the suggestions of others that you wouldn’t want these to guard something really valuable, but for a briefcase or backpack it’ll work just fine.The only reason I took off a star was because I order the pink/blue/black set and I received pink/blue/red. Mildly irritating as I wanted the black, and expected to receive what I bought, but whatevs.It's a lock it does what it's supposed to do. My only complaint is that when it is used outside the hole on the back side of the lock leaks rust colored water all over the ground and sometimes it gets on your hands. Other than that it's a nice lock it does the job.I would have given this a 5 star but there were no instructions on how to set the personal code. You have to figure it out a bit, but after that the lock is very easy to use.Locks are Small and Convenient. Doesnt Seem Like There will be Room for Clipping. Will be Using at a Gym locker lol. Easy to use ... 4 Stars Only because I Ordered the ‘Pink Blue Black’ Pack because I wanted the Black. Instead i was Sent Pink, Blue, and RED. Pictures Should be Updated because if Black wasnt Available I Wouldnt Have Gotten the Pack with the Pink Lock ?My daughter chose this as a lock for her school gym locker, unfortunately we didn’t realize the dimensions would not fit our needs. The description stated lockers are one of the uses, but I can’t see how. It is a nice little lock - possibly for luggage. Arrived on time and packaged well.