Key Features Made to Last: High-class Q355 manganese steel with an exquisite forging process make this product sturdy, and not easy to corrode or deform. Strong Load Capacity: The sturdy structure and high-strength material enable it to bear a weight of up to 617.29lbs, capable of withstanding the weight of various large stone slabs, greatly improving work efficiency and safety. Adjustable Design: You can freely adjust the opening size of the fixture within the range of 3.15-11.81 inches to accommodate stones of different sizes, making it easy for the fixture to meet various lifting requirements. High Safety: The self-locking nut and rubber mats can effectively prevent accidental loosening during lifting, greatly improving the safety of lifting and reducing the risk of accidents caused by loose fixtures. Application This product can be used in conjunction with cranes and tower cranes to lift materials such as marble, granite slabs, concrete slabs, and wood. Specification Material: Q355 Manganese Steel, Rubber Color: Yellow, Red Process: Forging Style: Modern Assembly Required: Yes Load Capacity: 280kg/617.29lbs Opening Range: 8-30cm/3.15-11.81in Specification: 6-8-10in Product Size: 41*10*21cm/16.14*3.94*8.27in Each Handle Length: 45.5cm/17.91in Package Size: 45*35*12cm/17.72*13.78*4.72in Gross Weight: 11.15kg/24.58lbs Net Weight: 10.59kg/23.35lbs Package Included 1* Stone Lifting Clamp 2* Handles 1* English Manual Notes 1.Please read the operating manual completely before use. And pay particular attention to the safety instructions included.