【Application】This tool is ideal for construction sites as it ensures the safe transportation of large prefabricated components, such as slate, granite, wood and metal plates, and is compatible with truck cranes for efficient lifting. [Granite Slab Lifting Clamp] This product is constructed of high quality alloy steel and processed by high-temperature forging to ensure excellent safety and durability. It uses a self-locking nut to ensure stability and is equipped with an adjustable manganese steel lifting chain to provide heavy-duty support. EASY TO USE - Designed for heavy duty work, integrates easily with cranes. Simply open the clamp, use the hook to release the jaws, insert the steel plate and pull back to secure it with the spring. ADJUSTABLE CLAMP OPENING - The adjustable opening width allows for secure holding of materials of varying thicknesses, making it a versatile tool for any tool set. Available in 7 sizes for optimal compatibility. 【Non-slip Rubber Mandrels】Rubber mandrels are made of PU material, designed to prevent damage to the surface of the stone while providing better grip and security through its textured design., Manufacturer: ZOCWJK