Kryptonite Kryptolok 990 Combo Bike Chain Lock, 3 Feet Long Heavy Duty Anti-Theft Sold Secure Gold Bicycle Chain Lock, 5-Digit Resettable Combination Lock for E-Bike Scooter Road Mountain Bikes

I picked this lock to use when I need to lock my bike to my hitch rack. It definitely looks un-cuttable. Thick, heavy and safe. I keep it in my car - It's not a lock you would want to carry around in a backpack. The combo was easy to set. I know that no lock is a 100% guarantee of protection - but this has to come close.

It looks scary so maybe that's enough. Its big, its heavy, and has the Kryptonite logo.At first I thought it was broken. You have to press the locking link into the lock body to pull the release on the end to open. Otherwise, it won't come out. I am never certain that combo locks are as secure, but this has five numbers, so maybe that adds something.The nylon chain sheath protects the bike mostly. The lock body itself is like a flail, so I've noticed some dings from it. I'd buy it again.

Bought this for my E-bike and it works great. I locks between the bars when I am not using it which is very convenient! Also have used this for dirt bikes in the desert to lock up at night. It's big enough to fit two big tires!

This thing is beefy and heavy. Long enough to lock two bikes to a post. Easy combination lock to use.

This bike lock combo is crap! Used to reset combo code put in my new combo now it wont open and it also won’t allow me to reset it with the reset code. Sending this back for a replacement. Ugh!!!

Looks sturdy. Very heavy. Easy to use.

After having my trailer stolen, securing expensive equipment has been a priority. Lock works great, like the flexibility to change combo and gives peace of mind knowing equipment is safe and secure. If there is any tension on the chain, locking is not particularly easy. Wish I had gotten the longer one it that one is on me

Too short