Magnum Onguard Pitbull STD Shackle High Security Anti Theft Bicycle Bike U-Lock LK8003 Bike part

Good, solid lock when it worked.I bought one some while ago: it rusted near the locking/shackle, despite being used in a closed garage. The supplier kindly replaced it, but now the second device has rusted in exactly the same place. Again, it was kept in a dry garage (WD40 applied, etc.)Each time, the lock refuses to open! (After much wrangling and forced, I managed to get my bike free without the need to call a locksmith, but only just!)

I have a normal to large sized adult bike and this didn't mount within the frame so try and check dimensions first. Had to send back - but they refunded me no problem

Grandson was appreciative of this as he has to leave his bike outside the university in London. Great product.

Great lock with loads of spare keys

Heavy lock, used the mount that comes with it and it perfect for the job

Really heavy duty... make sure you don't drop this on your foot.

very sturdy and safe lock. Comes with attachments to attach to your bike which is useful as its a very heavy lock (which is what you want!)

good lock and a bargain, would have been 5 stars but the anti theft guarantee is not available in the uk even though it's advertised on amazon and on the packaging