Steel cable (pair) with loop for later installation in bags with QL2 system and QL2.1 - short version for Sport-Roller, Sport-Packer, Gravel-Pack, E-Mate, Vario, City-Biker - long version for MOTO Sidebag, Back-Roller, Bike-Packer, Bike-Tourer, Office-Bag, Downtown Two, Commuter-Bag Two Urban, Bike-Shopper, Velo-Shopper, and Recumbent-Bag - separate lock (e.g. U-lock or padlock) is required.