Ortlieb QL2 Lock - single or pair

Every once in a while we all need to leave our panniers on our bike. Wouldn't it be great if there was a bit of security locking them onto the rack?
Ortlieb's QL2 - Lock is a  reliable way to keep a pannier securely attached to your rack. This specially developed lock is compatible with all QL2 systems, providing an extra layer of security for your gear.
Designed to fit standard racks up to 16 mm in diameter, the lock remains open after unlocking, ensuring it doesn’t interfere with attaching or detaching your bag. It installs easily onto your Quick-Lock system—no tools required.
Buy a single if you're just wanting to lock a pannier, or get a pair (with matching keys) if you need to lock 2 panniers.

Info sheet/Instructions