Safety belt buckle clip can be installed on existing seat belt buckles for a more secure connection. Ideal for traveling with children, providing added peace of mind regarding your child's safety in the back seat. [Sturdy Material] The car seat buckle is made of high-quality, thick, durable plastic material, built to last for long-term use. Easy to Use: Each set includes two seat belt caps and two keys, allowing installation on both rear seats. They can be easily removed and installed using the included key. Simple to apply. Function: This seat belt buckle adapter is designed to prevent children from secretly unbuckling their seat belts while driving. It is intended to secure child seats and enhance safety during vehicle operation. Note: Please ensure compatibility with your vehicle before purchasing. Seat belt buckles fit most vehicles but are not suitable for front passenger seats. Use only in rear seating positions. Measurement Note: All dimensions are manually measured; please allow 1–3 cm variation due to lighting and display differences. Color may vary slightly depending on monitor settings. Please refer to the actual product received.