Features: Easy to use:The T shaped pulley slide track is designed for easy installation on 1-5/8 inch (about 4.4cm) wide and 1-5/8inch (about 4.6cm) or higher support channels. Suitable for electric hoists installation and bouble directional movement, with a weight capacity of 540lbs. Stable operation:Equipped with standard deep grooves balls bearings, the wheels slide smoothly and quietly. The solid alloy steel shaft ensures high strength, while the galvanized zinc coating prevents rust. Welded positioning of the bearings ensures stability during operation. for various users:This T shaped pulley slide track is suitable for anyone in need of lifting heavy object, such as construction workers, warehouse operators, and DIY enthusiasts.It provides a reliable and convenient solution for efficient moving loads. Durable and reliable:Made of high quality alloy steel, this T shaped pulley slide track is built to last. With a load capacity of 540pounds (300kg) and a breaking load of 6613pounds, it can withstand heavy duty tasks. Its sturdy construction and smooth operation make it a dependable choice for any lifting project. Specifications: Material:Alloy Steel Capacity:540lbs Breaking Load:6613lbs For use with 1-5/8inch wide and 1-5/8inch or taller strut channel Package Includes: Package A 1Set 6 Wheel Trolley Assembly Package B 2Set 4 Wheel Trolley Assembly note: Please allow 1-2cm errors due to manual measurement,please make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.