Durable Alloy Steel Construction: Crafted from thickened alloy steel and subjected to high-temperature forging, these stone lifting clamps are built for safety and durability. Designed to withstand harsh environments without breaking, they offer excellent stability and longevity. Adjustable for Various Stone Sizes: Featuring multiple adjustment holes, the opening width can be easily modified to accommodate different stone dimensions. This versatility ensures a perfect fit for a wide range of stone sizes, enhancing practicality and convenience. Non-Slip Rubber Chuck for Secure Grip: Equipped with polyurethane rubber on the contact surfaces, these clamps provide a secure hold on stones without causing damage. The textured rubber increases friction, effectively preventing stone slippage, ideal for delicate or polished surfaces. Ergonomic Design for Heavy-Duty Use: With a maximum load capacity of 770lbs and an adjustable opening distance from 40-300mm, these tongs are designed for efficiency and ease of use. The pull ring and exquisite casting process ensure high strength, toughness, and stable lifting. Versatile Application Across Industries: Perfect for factory hoisting, road construction, and stone transportation, these lifting clamps are suitable for various materials including marble, granite, concrete slate, hollow brick, and rectangular brick, making them a multipurpose tool for professionals., Manufacturer: AYCDL