Sesamee K437 4 Dial Bottom Resettable Combination Brass Padlock with 2-1/4-Inch Hardened Steel Shackle and 10000 Potential Combinations

I bought this lock based on several online reviews. I have three of them, and one with the stainless shackle, that I accidentally ordered. I meant to get this marine grade one with the Brass shackle when I ordered that one.All four are fantastic. Changing combinations is very simple. One time I failed to push the "set" pin all the way in, but I quickly realized my mistake. Sometimes it can take a little more force than expected on one of my locks. Just know that it should go almost as far "In" as it can.The lock is very solid. I cannot stress this enough. They make Master Lock products feel loose and wobbly. I never thought they were until I started using one of these. I have seen the comparable looking model from ML. It is actually slightly different dimensions. These locks have a slight outward angle, whereas the ML is straight up and down. I admit I have seen the ML version of this lock functioning for 25+ years on a friends sailboat. It still works. But it is a pain to work the dials. I have read very few reviews that support ML as much. However I have seen several personal testaments that re-affirm the quality of Sesamee Locks. It may be hype, but handling the two makes me think otherwise.I have one observation, not really a negative. Due to my own ignorance, I thought my lock had a problem. I didn't realize that when the number wheels are spun in a decreasing direction, they stop at 0. I don't know why, they just do. Passing 9 in the increasing direction, it will go to 0 and continue increasing. I have adapted to setting the locks to all 0's when I'm done. I guess that was why they are made that way.Would I buy them again, absolutely! I'm sold on these over Master locks from now on. I read too many reviews about how the Master locks failed to remember their combo, or just plain stopped working. These things need better marketing, they are 10x the quality of anything comparable!I have been reformed. Gone is the day of the loose wobbly master lock. These just feel like quality.Updated: Still going strong. The one outside is still perfect. No issues with any yet. My master lock failed. I had to break it to get past it. I spray the Sesame with lube occasionally, because I like them spinning smooth.

The Sesamee and Master locks are virtually identical in exterior size and appearance. This lock (K436) has a hardened plated steel shackle, brass case. For more extreme outdoor exposure consider the Sesamee K0436 all-brass model with brass shackle otherwise identical. We have/use many of both lock types and prefer the harder-to-find Sesasmee than the widely distributed Master lock - good thing Amazon sells both.The the combo set pin on this lock is (smartly) inside the shackle hole, and is a stout flat sided pin. It is not on the outside case hole like the Master lock, the Master lock set key is a flat relatively thin metal key which feels flimsy to use - as if it just might break off not comforting. We do not use these in a high-vibration environment e.g. trucking so cannot comment on propensity for combo changes we have never had that problem. It is sure nice to set your own combos rather than remember a totally random manufacturer determined number sequence.There is a video on YouTube showing a locksmith fumbling with a demo/cut-away Sesamee lock and having trouble doing it. That is simply NOT the real-world case/our experience. The Sesamee’s actually set easier than the Masters. Also we do not use these locks (Master or Sesamee) in a high-vibration environment e.g. trucking so cannot comment on propensity for combo changes we have never had that problem. It is really nice to set your own combos to easily remembered numbers rather than remember a totally random manufacturer determined number sequence.The Sesamee has a nice feature where the combo wheels can be rolled back to zeros (they hit a stop in that direction) which is useful for folks operating the lock in dark low light situations. Can't do that with the Master lock.CCL (Corbin Cabinet Lock Company) was founded in 1882 in New Britain, CT is the originator of the Sesamee Brand 4-wheel combination lock design. The Sesamee lock is now made overseas (Taiwan) and the quality remains high. The Master lock is made in the US.

I needed to lock up my trailer and this lock has a nice long neck, super strong and the action to open and close is really smooth. You can easily read the code pad and this lock could not be any easier to use. I highly recommend this lock.

Haven't had long but it's my impression it is very well made, strong and beautiful. Heavy and very sturdy. Looks like it would last a long time.Way nicer than expected.Notes:1. When setting lock, when you push the setting pin into the lock press it ALL THE WAY IN CLEAR UP TO THE RING AT THE TOP OF THE PIN.2. Plan your combination carefully. Do not remove pin or let it slip out of position before you have all numbers set.If it comes out before you're finished you may find you just set the combination to the numbers as they were aligned when the pin slipped. Not your attempted combination.So if pin does slip and/or before turning dials, write down the combination exactly as it was when pin slipped. That may be your newly set combination.Be sure that you have set dials to the correct numbers before pulling out the pin. It can be easy to make a mistake in your combination if you hurry and don't double check your sequence before removing the pin.If you get one number off or the rings are little out of their "clicked" position you may not have your correct combination.Try opening and closing the lock a few times before actually locking something to avoid a locked item and an unknown combination.Steve