General description The 20 Pcs Lifting Pulley features a V Groove Wheel design, ideal for lifting and reeving applications. With a robust load capacity of 200kg per roller, these pulleys are perfect for various sliding door systems, including industrial machines and garage doors. Technical specifications Material: High-quality galvanized steel Wheel diameter: 31mm Loading capacity: 200kg per roller Compatibility and accessories Suitable for 90-degree V-panels (confirm the size before ordering) Usage Ideal for high-performance sliding doors Applicable for factory doors and industrial mechanical railway engineering Can be used for dog doors, garage doors, and garden doors