Material: aluminum, solid plastic, bakelite. Please understand before purchasing: 1. Is it the standard corrugated box in the picture? 2. Determine the length*width*height of the corrugated box after folding. Suppose you have two types of airplane boxes: 32*23*8mm and 43*15*4mm. The maximum length is 43mm and the maximum width is 23mm. Please choose a clamp specification with a length of ≤45mm and a width of ≤25mm, and all will be compatible. This versatile clamp is designed for secure and stable holding of various box sizes, ensuring your packaging needs are met with precision. Crafted from durable aluminum and solid plastic, it offers long-lasting performance. The bakelite components provide excellent heat resistance. Ideal for shipping, storage, and organization, this clamp simplifies your workflow. Enhance efficiency with easy-to-use design, perfect for both professional and personal use. Compatible with multiple box configurations, it adjusts to your specific requirements. Whether for e-commerce or household tasks, this clamp delivers reliability. Lightweight yet sturdy, it reduces handling time. Streamline your packaging process with this essential tool, built for durability and convenience. Non-slip grip ensures boxes stay in place during transport. Easy to clean and maintain. Upgrade your packaging solution today.