【IMPROVED GRIP PERFORMANCE】Vertical plate grippers use a scissor design that increases gripping force as tension increases, allowing wider jaw openings for more efficient handling and ultimately increasing productivity. 【RUBBERIZED NON-SLIP DESIGN】The stone slab clamp is made of polyurethane rubber material, which prevents damage to the stone during lifting. Its textured surface improves friction to prevent slipping and ensure secure buoyancy. 【DURABLE ALLOY STEEL】Made of high-quality alloy steel, this stone lifting tongs undergoes high-temperature forging and features an anti-rust coating, ensuring long-lasting durability, safety, and break resistance. 【VERSATILE USE】This industrial lifting device is ideal for use with crane trucks in construction, road building and stone transport, making it perfect for lifting concrete blocks, granite slabs, steel plates, wood and other large materials. 【ADJUSTABLE OPENING MECHANISM】This lifting tool is equipped with adjustable jaw widths to accommodate different stone sizes and features a safety spring mechanism that ensures the clamp remains secure during both lifting and lowering.