Features CARBON STEEL MATERIAL: The pulley is made of high-strength carbon steel, with high hardness, sturdiness and impact resistance. CNC precision machining technology, full penetration welding. Two components 8-wheel cart with a load capacity of up to 2700 lbs. STRONG STABILITY: Assembled with 8 wheels with welded bearings and pin shafts, it has higher stability and is safe to use. SILENT OPERATION: The pulley uses deep groove ball bearings to ensure smooth operation without generating any noise. EXCELLENT PERFORMANCE: Our 8 wheel trolley assembly has impact resistance and galvanized properties, providing protection against rust and corrosion. It also has a steel pin shaft with sturdy bracket in the pillar channel. WIDELY APPLICABLE: The pulley assembly can be used for household mobile doors, cabinets, large iron doors, curtains, pulley assemblies of automation equipment, factory rail pulleys, etc. 1. CARBON STEEL MATERIAL: The pulley is made of high-strength carbon steel, with high hardness, sturdiness and impact resistance. CNC precision machining technology, full penetration welding. Two components 8-wheel cart with a load capacity of up to 2700 lbs. 2. STRONG STABILITY: Assembled with 8 wheels with welded bearings and pin shafts, it has stronger stability and is safe to use. 3. SILENT OPERATION: The pulley uses deep groove ball bearings to ensure smooth operation without generating any noise. 4. EXCELLENT PERFORMANCE: Our 8 wheel trolley assembly has impact resistance and galvanized properties, providing protection against rust and corrosion. It also features a robust steel pin shaft in the pillar channel. 5. WIDELY APPLICABLE: The pulley assembly can be used for household mobile doors, cabinets, large iron doors, curtains, pulley assemblies of automation equipment, factory rail pulleys, etc. Specification: Item Type : 8 Wheel Trolley Assembly Material: carbon steel Application It can be used for family activity doors, cabinets, large iron doors, curtains, automation equipment pulley components, and factory rail pulleys. > Packing list: 2 x 8 wheel trolley set Package List 2 x 8 Wheels Trolley Assembly