CE certified. Capacity: 0.5t to 30t. Lifting H: 2.5m to 20. Min distance betwwen hooks: 270mm to 1000mm. Pulling force of full load: 225N to 392N. Diameter of load chain: 6mm to 10mm. N.W weight: 9.5kg to 155kg.Widely used, easy operation. Tight structure, small volume, light weight, save labour, high efficiency, durability, long life. Use safe and reliable, easy maintenance. Mechanical efficiency, chain tension. Lighter weight, easy to carry. Appearance, small in size. Durable.Chain block.