The Thule Cylinder + Comfort Key is a high-quality replacement part for roof boxes, specifically designed to meet the needs of users. Made in Belgium, this product offers a reliable solution for securing your roof box. The cylinder has a compact size of 5.7 cm in length, 2.2 cm in width, and 1.7 cm in height, making it a practical addition to your gear. Weighing only 20 grams, it is lightweight and easy to handle. The cylinder is made of sturdy metal, ensuring durability and security. Included in the package are the cylinder and the corresponding Comfort Key, which allows for easy handling. This replacement part is an ideal choice for anyone looking to optimize their use of roof boxes while ensuring the safety of their contents.