Features Excellent Material: 8 wheels trolley assembly is made of high strength carbon steel and stainless steel, resistant to impact, galvanized, and provide rust and corrosion protection. Strong Performance: T pulley is assembled with an 8 bearing trolley with welded bearings and pins, which has stronger stability and is safe to use. Strong Bearing Capacity: Our bearing steel is made of professional excellent stainless steel, which has high load bearing capacity for use higher struts aisle. CNC Process: 8 wheels pulley assembly is forged using a tight process, with a smooth surface treatment, no burrs, uniform stress, beautiful appearance, and smooth design. Widely Applicable: The pulley assembly can be used in conjunction with the pillar channel, and can be used for household moving doors, wardrobe cabinets, large iron doors, curtains, automation equipment pulley assemblies, factory track pulleys. Specification: Item Type: 8 Wheels Trolley Assembly Material: Carbon steel and stainless steel Color: Silver Uses: Can be used for family activity doors, wardrobe cabinets, large iron doors, curtains, automation equipment pulley components, factory track pulleys Package List: 1 x 8 Wheels Trolley Assembly Package List 1 x 8 Wheels Trolley Assembly