Master Lock Force 6-Ton Bicycle U Lock

Comparing other locks, this one is good buy!

The lock is as advertise, strong and beefy. No bike lock is impossible to get around, you want to make your bike as unappealing as possible to potential thieves and this lock does that. It's quite sturdy and easy to lock and unlock.

Product is used to lockup my bikes in the garage.

Wonderful bike lock to secure bike just about anywhere.

This lock is a beast, as nice or nicer than a[$]Kryptonite. I'm here in Portland, OR, and there are hundreds of bikes stolen every week....no one is going to mess with this lock!

This appears to be a trustworthy and very strong bike lock. I use it in Manhattan, infamous for bike theft, where even in broad daylight bicycles are stolen with impunity. I need to add a cable lock for the wheels, and remove the seat and carry it with me, but most important is this U lock for the bike frame. It is heavy, but no more so than other quality U locks, and weighs less than the big chain locks. This will serve it's purpose well, at a terrific price!

This is a great lock for the money but was too big for my bike and had to be returned. It's also very heavy and bulky.

This bike lock feels very strong and I feel secure using it. However, it is very heavy and I would like to have something a little lighter to cart around as a commuter biker. Also, it's so big that for my bike, I wasn't able to find a place to install the bracket at all, so I will have to carry it in a bag or some other method.

Good lock to leave someplace where you ride your bike to every day, like work. Has a nice little plastic cover to keep keyhole clean.

This lock is intimidating, it's so tough -- and that's what we wanted. But, oh my goodness, it weighs as much as the bike!