Each U Type Single Wheel Pulley Block features 4 mounting holes with a 7mm diameter, compatible with 3-12 mm width flat belts. It can be mounted on various surfaces including wood and metal. Includes 4 pieces of 6x40mm self-tapping screws and 4 pieces of 10x60mm yellow expansion plugs. The Single Wheel Lifting Rope Pulley Block is constructed from high-quality stainless steel, ensuring durability and easy cleaning. The reinforced steel plate increases load capacity, supporting up to 800 pounds. Equipped with a silent duplex bearing design, this pulley reduces friction for smooth and stable rotation, operating with minimal noise. This wall mount pulley block is suitable for a wide range of applications, including home fitness systems, wire rope traction, DIY gym pulley setups, inverted tracks, lifting mechanisms, ladder lifts, gym equipment, rolling gates, sliding gates, and other outdoor uses. Installation is simple: mark the hole positions, drill 4 holes using a 10mm drill bit, insert the expansion plugs, and secure the pulley with the provided self-tapping screws.