Alloy steel forging: We use high-quality thickened alloy steel for high-temperature forging, high-temperature forging processing, safe and durable, not easy to break, and longer service life. Suitable for all kinds of stone, marble, concrete slabs, hollow bricks, rectangular stone bricks Adjustable opening: The hole position is adjustable, 12/17 inches, easily cope with objects of different sizes. The opening size is 12-36CM, 30-51CM, which can be adjusted freely and conveniently. The hole spacing is adjustable, easily adapting to different sizes of stone Rubber anti-skid pad chuck: made of polyurethane rubber material, special material will not hurt the stone, anti-skid texture, texture design increases friction, the stone is not easy to slide, increase friction, increase safety Adjustable chain: High-strength manganese steel chain, thickened to prevent breakage, 20-step polishing and hardening process design, high tensile strength and high safety factor. Chain adjuster, conveniently adjust the chain length, more flexible operation. High-quality screw accessories: using first-class hardware accessories screws, strong and durable, non-slip, more convenient and safe, self-locking nuts are thickened and enlarged, safe and convenient, strong stability, strong and durable, Manufacturer: ZOCWJK