Product Description

16mm massive hardened ultra steel shackle is the biggest,
toughest shackle
LS is 4.2 x 10.25, 5.2 lbs.
Includes 5 laser cut keys and 1 light key.
Five Star plus security level rating make these locks the ultimate theft resistant locks for high crime areas

Product Details

• Amazon Sales Rank: #5560 in Sports & Outdoors
• Size: --
• Color: --
• Brand: OnGuard
• Model: 5000
• Dimensions: 2.20" h x 7.90" w x 13.00" l, 5.75 pounds

Features

• 16mm massive hardened ultra steel shackle is the biggest,
• toughest shackle
• LS is 4.2 x 10.25, 5.2 lbs.
• Includes 5 laser cut keys and 1 light key.
• Five Star plus security level rating make these locks the ultimate theft resistant locks for high crime areas

Customer Reviews

Monster Lock!
This is by far the best lock I have put on my Bike or electric scooter. I use to wonder if my bike or scooter would still be there when I got back but with this lock. . . no proglemo. I live in NYC so it better be good. I drive less now since I started using this MONSTER LOCK! Be warn, it's a bit heavy (4lbs) but if someone does mess with you then it doubles as a self defense device!!!

Excellent lock for all day parking
I purchased this u-lock to park my bike at the train station and it works great. I use it exactly as described in the user guide and it's so strong that I leave my bike all day long there without worries. I didn't buy this lock to be carrying it around though, as it is kind of heavy (weights 4.52 lb) so I leave it locked to the bike rack overnight and I always carry on the bike a Kryptonite Coil Cable Bike Lock for short trips to the super market, etc. Using the locking technique described in the OnGuard user's guide, the measures of this lock are just right to lock the bike to a standard bike rack however, there are alternative ways to lock the bike to the rack depending on what you are locking it to. As a general rule you should use a good u-lock to lock the back wheel and the frame to a rack and a lock cable to lock the front wheel to the rack and the frame. For what I read on the user reviews for other u-locks (i.e. Bell u-lock) it's much more effective to have one single strong u-lock than 3 weak cheap u-locks.

safe but heavy/awkward...
I bought this lock based on a review I'd read elsewhere saying it took over 3 hours to break through, and since I just bought a new bike, an expensive bike... I didn't want to take aaaaany chances of it getting stolen. The GOOD part about this lock is it IS wicked strong, durable, seems it'd be a pain-in-the-behind to cut so I feel thieves would be deterred. The BAD parts are: 1. the base part only fits one way onto the U-bar (so use something to identify how it lines up!)... 2. the base part is hard to get back onto the U-bar, it's finicky, to say the least... and 3. it's wicked heavy!!! Don't expect to hang this on your handlebar and go for a ride. I have to carry it in a backpack, and after about 20 mins I start to feel it. :-( *I'm only 5'4" and 106lbs.