Feature: 1. 6 Wheel Trolley Assembly: The roller trolley assembly features 6 wheel design and uses welding bearings and pin shafts for strong stability, ensuring safe and reliable operation. 2. Applicable Range: This 6 rollers trolley assembly has a load capacity of 255KG and a breaking load capacity of 3000KG, suitable for all 1‑5/8in or higher strut channel roller trolley. 3. High Strength S45C: The roller trolley assembly is made of high strength carbon steel (S45C), with CNC machining and full penetration welding, greatly extending its service life. 4. Low Noise Bearings: The 6 roller trolley assembly uses deep groove ball bearings to ensure smoother operation and no noise, making it suitable for more usage environments. 5. For Hoist Installation: Including 2 pieces 6 wheel trolley assembly, suitable for electric hoist installation, with good impact and corrosion resistance, can be used with confidence. Specification: Item Type: 6 Wheel Trolley Assembly Material: Iron, S45C Load Capacity: Approx. 255KG / 562lbs Breaking Load: Approx. 3000KG / 6613lbs . Package List: 2 x Roller Trolley Assembly Note: 1. There is a slight error in size.2. Screw not included.