Package IncludesSet contains 1 lock core and 2 keys! 3 pieces in total. This lock kits lets you replace new locks cylinder, add security to your rack system and cargo.High QualityRoof rack cross bars locks cylinder and keys are made of high quality metal material, rust resistant, sturdy and durable, longer service life.Perfect Replacement If the lock cylinder in your rack is damaged or rusted, there will be a security risk. A new lock cylinder is needed.Wide ApplicationsThe lock cylinders are perfectly used for car roof boxes, roof racks, rooftop cargo carrier, car luggage rack crossbar, automotive cargo crossbar, etc.Easy to InstallThis replacement lock core and key for car racks system can be installed directly in a few minutes, quick installation and convenient to use. Specification: Material: Metal Size Chart: Lock Cylinder Diameter 2.2cm/0.87inchLock Cylinder Inner Diameter 1.9cm/0.75inchTotal Size: 3.2cmx4.4cm/1.26inchx1.73inch Package Includes: 1 Pieces Lock Core2 Pieces Keys Note: Please allow slightly errors due to manual measurement and different monitors.