• Adjustable width: Fits I-beams and H-beams with an adjustable width of 2.5 to 7 inches (63.5-177.8 mm). Includes 50 washers of 2.5 mm for easy adjustments. • Robust construction: Made with durable alloy steel, supports up to 4400 pounds (2 tons). Corrosion-resistant and designed for durability. • Multiple protections: Includes hex nut, collision bumper, and anti-drop wire pin for added safety and to extend the trolley's lifespan. • Easy installation: Simple setup on various steel beams. Measure the size, place the washers, and secure with the nut and pin. • Versatility in movement: Ideal for factories, construction sites, and warehouses. Its wide adjustment range and easy installation make it perfect for various lifting tasks. • Specifications: Load capacity of 4400 pounds (2 tons), product weight of 19.51 pounds (8.85 kg), and dimensions of 10.07 x 8.66 x 9.64 inches (256 x 220 x 245 mm).