Wide range of applications: This clamp is ideal for various situations, such as factory lifting and road construction. Easily handles concrete blocks, granite slabs, wood, and large precast components, making it an indispensable tool for engineering projects. DURABLE ALLOY STEEL CONSTRUCTION - This stone lifting clamp is constructed of thickened high-temperature forged alloy steel, providing excellent durability and stability. Withstands continuous use in harsh environments, ensuring reliable and safe stone lifting operations. Thickened nuts and chains for safety: The clamp features thickened nuts for safety and stability under heavy loads, and is equipped with an adjustable manganese steel chain. Its ergonomic design ensures efficient and safe lifting operations. NON-SLIP RUBBER CHUCK: The clamp features a rubber mandrel that protects the surface of the stone from scratches and improves grip. Its non-slip textured design significantly increases friction, minimizes the risk of slipping and improves operational safety. Adjustable opening, wide range of uses: The clamp has multiple adjustable holes that allow you to adjust different size gemstones. This flexibility makes it ideal for a wide range of applications, making it practical and convenient., Manufacturer: ZOCWJK