ADJUSTABLE CLAMP OPENING - All the opening widths of the granite holder grabber are adjustable to fit stones of different sizes and meet various needs. The length of the chain is also adjustable. The clamp is available in 7 sizes. [Applicable scenarios] The slab lifter is suitable for road construction, stone transportation, etc. It can be used together with a truck crane to lift concrete blocks, granite slabs, wood, plates, steel plates, metal plates, stone slabs, large precast parts, etc. EFFICIENT HANDLING PLATE LIFT - Scissor type vertical grippers increase grip strength by increasing applied tension and allow for greater jaw opening, thus improving efficiency. The chain can be hung on excavators, cranes or other machinery. 【Non-slip Rubber Mandrel】Made of PU rubber, it is heat insulating, shock resistant and wear-resistant, and the lifting operation will not damage the stone; the texture design is non-slip, safer and not easy to slip. Sturdy Steel Structure: The stone lifting clamp is made of thickened and forged high-temperature alloy steel. It is safe and durable, does not break and has a long service life. The self-locking nut is safe, stable and easy to use., Manufacturer: ZOCWJK