Durable Alloy Steel Construction: These stone lifting clamps are made of thickened alloy steel and forged at high temperature, designed for safety and durability. They are break-resistant, excellent durability and stability, suitable for long-term use in harsh environments. Adjustable to various stone sizes: The clamp features multiple adjustment holes, allowing the opening width to be freely adjusted to accommodate stones of varying sizes. This versatility perfectly meets your diverse stone processing needs, combining practicality and convenience. Ergonomically designed for heavy-duty use: These pliers can handle a maximum load of 770 lbs, have an adjustable opening distance from 40-300 mm, and are durable. The ergonomic pull ring design and sophisticated casting process ensure high strength, toughness, and long-lasting lifting performance. Non-slip rubber grip for a secure hold: The contact surface is made of polyurethane rubber, which provides a secure grip on the stone without damaging it. The textured rubber increases friction and effectively prevents the stone from slipping, making it an ideal choice for delicate or polished stones. Wide Application Across Industries: Designed for a wide range of applications including factory lifting, road construction, and stone transport. Suitable for handling materials such as marble, granite, concrete slate, hollow bricks, and rectangular bricks, making it a versatile tool for a variety of projects., Manufacturer: ZOCWJK