1.Made of stainless steel with high hardness, corrosion and rust resistant, strong and sturdy. 2.Anti-rust and wear resistance with solid structure, with shock light treatment, sturdy and 3. Fixed top for easy rope handling, smooth roller makes rope traversing unhindered 4. Pulleys for lifting with rope can be used with inner and outer rope or cord for flexible sliding pulley. Easy installation for large kayaks, 5. Suitable for large kayaks, canoes, factories, construction, shipping, mining, household, garage, machine loading, curtain, clothesline, dog pulley system, etc. Specification: Material: stainless steel Color: silver Size: 25mm Package Contents: 10 PCS * pulleys Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in a little different from the real thing. The measurement allowed error is +/- 1-3 cm.