This is a replacement key for car top carriers such as the Yakima Roof Top Carrier, Sears Karrite Sport 20-SV Car Top Carrier, Sears X-Cargo Car top Carrier, Thule Ski Rack key replacement, Halford Roof Box key and other misc. applications. Key will be cut to code and ready to work in the lock. Key number on the face of your lock should match the code you order. Occasionally the code may not be preceded by a letter code.