Durable Alloy Steel Construction: Crafted from thickened alloy steel and subjected to high-temperature forging, these stone lifting clamps offer unmatched durability and stability, ensuring long-term use even in harsh environments without the risk of breaking. Adjustable for Various Stone Sizes: Featuring multiple adjustment holes, the clamp's opening width can be easily modified to securely fit stones of different sizes, enhancing its versatility and practicality for diverse applications. Non-Slip Rubber Chuck for Safe Handling: Equipped with polyurethane rubber on the contact surfaces, the clamp provides a secure grip on stones without causing damage. The textured rubber increases friction, effectively preventing stone slippage, ideal for delicate or polished stone products. Ergonomic Design for Heavy-Duty Use: With a maximum load capacity of 770lbs and an adjustable opening distance ranging from 40-300mm, the clamp's ergonomic pull ring design and high-strength casting ensure durable, stable, and comfortable lifting operations. Wide Range of Applications: Perfectly suited for factory hoisting, road construction, and stone transportation, this lifting clamp is compatible with various materials including marble, granite, concrete slate, hollow bricks, and rectangular bricks, making it a versatile tool for numerous industries., Manufacturer: AYCDL