Alloy Steel Material: 3 Ton Snatch Block Winch Pulley is made of alloy steel, which is strong and can withstand heavy loads up to 3 tonsIndoor and Outdoor Application: Pulley Block is suitable for indoor and outdoor environments and can be used for a long time under various conditions. It is suitable for various lifting needs such as marine, industrial, agricultural, and householdRope Accommodation Range: Towing Pulley can accommodate ropes with diameters ranging from 0.08 to 0.32 inches (maximum 9 mm), and the appropriate rope thickness can be selected according to needsStrength and Wear Resistance: Tackle Block has high strength and wear resistance, and is designed to be easy to operate and store, so that users can use it quickly when neededEnhanced Lifting Capacity: Winch Snatch Block can enhance lifting capacity, suitable for hobbyists, DIY projects, or professional use Specification: Material: Alloy steel Size Chart: 9.5cmx7cm/3.74inchx2.76inch Package Includes: 1 Pulley winch Note: Please allow 2%-5% error due to manual measurement. Thanks for your understanding. The color may be slightly different from the real a due to the light.