Security enhancement The elastic lock core greatly reduces the risk of key duplication. The antimispulling feature prevents key removal during unlocking, ensuring security at all times. Robust and reliable construction Made from nylon for strength and flexibility. The included pure copper keys are designed for wear resistance and longterm stability when used with the lock core. Userfriendly labeling A rewritable label on the back enables easy identification of lock manager information or designated use areas, supporting organization and traceability. Use scenarios Facility management and building access control: use to manage keys for maintenance rooms, electrical closets, and storage cabinets; the label helps assign responsibility and track usage. Office, school, or gym environments: manage keys for equipment rooms, IT closets, and supply closets; rewritable labels allow quick updates as assignments change. Workshops and manufacturing settings: secure tool cabinets or carts; security features help reduce key loss and misplacement during routine unlocks.