Features: Heavy-Duty Construction: Made from thickened stainless steel with a galvanized surface, ensuring superior durability and resistance to rust, wear, and heavy loads Dual Bearing System: Features double bearings for smooth, low-friction rotation, enhancing efficiency and longevity in lifting and sliding applications Versatile Compatibility: Available in 40×40 mm and 50×50 mm sizes with three mounting options (Lifting Chain, Lifting Rings, Flat Tile), making it adaptable to various angle iron tracks and setups Precision V-Groove Design: The steel V-groove ensures secure tracking and alignment on angle iron rails, reducing slippage and improving operational stability Multi-Purpose Use: Ideal for cranes, lifting tools, sliding gates, and other industrial or DIY projects requiring reliable, heavy-duty pulley systems Notice: 1. Actual color may vary slightly from the image due to lighting conditions 2. Please allow 1–3 cm measurement deviation due to manual measurement Specifications: 50×50 mm angle iron pulleys (Lifting Chain type) 40×40 mm angle iron pulleys (Lifting Chain type) 40×40 mm angle iron pulleys (Lifting Rings type) 50×50 mm angle iron pulleys (Lifting Rings type) 50×50 mm angle iron pulleys (Flat Tile type) 40×40 mm angle iron pulleys (Flat Tile type) Dimensions: 18×14.5×2 cm 18.5×12.5×2 cm 12.5×12.5 cm 14.5×10.5 cm 13×9 cm 11×9 cm Package List: 1 × Crane Bearing Wheel