High performance: Heavy duty groove wheel pulley with strong bearing capacity, supports up to 176 lbs, providing smooth and quiet operation. Easy installation: Track rail fixed pulley that is simple to install and can be mounted on walls, floors, ceilings, beams, and more for a firm, stable setup. Product size: Overall height 3.4 cm (1.34 in); overall length 6.1 cm (2.40 in); wheel diameter 2.5 cm (0.98 in). Compatible with rope diameters 3 to 6 mm. Wide applications: Multifunctional pulley block for material handling and moving, rope cable cord guides, sliding gates, rolling gates, clotheslines, winches, and other DIY projects. Use scenarios: - Sliding or rolling gate systems: guide and support the gate along a track for smooth operation. - Workshop rope guides: route and manage cords and lines in material handling or rack systems. - DIY winch or lifting setup: pair with a rope to pull or hoist lightweight loads along a fixed rail.