Simply detach the base with the key to allow passage of vehicles. Durable stainless steel construction: Resistant to rust and extreme weather conditions for long-lasting use. High visibility warning: Yellow reflective film ensures visibility in low light conditions, promoting safer driving at night. Complete set: Includes 1 parking barrier post, base, lock, key, and screws for convenience and peace of mind. Quality assurance guaranteed. Versatile use: Ideal for commercial and private parking areas, including residential zones, shopping malls, airports, and more.