Feature Highlights: 1. Durable Stainless Steel Build – Made of high-quality stainless steel for superior wear resistance and strength, ensuring long-lasting performance. 2. Wide Compatibility – Fits 3mm to 10mm wire ropes, climbing ropes, or twine, making it versatile for various uses. 3. Smooth & Quiet Operation – Features a silent bearing design for noiseless, smooth, and effortless sliding. 4. Easy Installation – Can be mounted on wood, walls, or metal surfaces. Each pulley includes 4 self-tapping screws and 4 yellow expansion sleeves for quick setup. 5. Multi-Scene Use – Ideal for home fitness equipment, shoulder and arm exercises, or outdoor work applications. Product Details: This U-type single-wheel pulley block is crafted from robust stainless steel to handle heavy-duty use while resisting wear and deformation. Its silent bearing ensures quiet, smooth rolling, and the deep groove design securely guides ropes up to 10mm thick. Installation is straightforward—mount it on wood, walls, or metal with the included hardware. Perfect for DIY fitness setups, garage organization, or outdoor utility tasks, this 4-pack offers reliable performance across different scenarios. Specifications: - Type: U-Type Single Wheel Pulley Block - Overall Height: 60mm - Base Size: 68mm x 30mm - U-Groove Depth: 6mm - U-Groove Inner/Outer Width: 16mm / 22mm - Wheel Diameter: 48mm - Color: Silver - Material: Stainless Steel - Package Includes: 4 x U-Type Single Wheel Pulley Blocks Note: - Rated load capacity: Up to 800 lbs, though actual performance depends on mounting material and angle. For example, on wood at a vertical angle, it holds about 200 lbs; on concrete at a 45° angle, it can support up to 800 lbs. - Slight color variations may occur due to lighting or screen differences. - Measurement tolerance: +/- 1–3cm. - Package includes only the items listed above.