[Specification]: 20 single pulley blocks. The overall length is 2.44 inches (62 mm), the wheel diameter is 0.59 inches (15 mm), the wheel width is 0.31 inches (8 mm), the width of the swivel eye is 0.43 inches (11 mm), and the safe carrying capacity is 35 kg/77 lb. Simple sturdy M15 pulley block. [Stainless steel material]: The pulley block is durable, rust proof, wear-resistant, moisture-proof, corrosion resistant and can be used for a long time even in bad weather. [Flexible top ring]: rotate to prevent the rope from knotting. The wheels rotate smoothly, giving you a good experience. [Application]: The pulley block uses gravity for lifting, transmission or traction, with sliding function, and is widely used for the traction of wire ropes or other rope tools. Suitable for rope lifting, tent tightening, industrial lifting, high-altitude operation and many other fields Colour:Silver Material:Stainless Steel Package Contents: 20 x pulley Only the above package content, other are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.