Feature:1. Made of high-quality aluminum alloy and plastic material with long service life.2. Easy to install and easy to use, reliable and it is practical accessory for ladder.3. Wear resistant, corrosion resistant, not easy to be damaged, durable for long-term use.4. Convenient for replacement, the worn or old pulley wheel can be replaced directly.5. Universal ladder pulley wheel, compact structure and high reliability.Specification:Condition: Brand NewItem Type: Ladder Pulley WheelMaterial: Aluminum Alloy + PlasticDiameter: Approx. 4cm / 1.6inHole Distance: Approx. 6.5cm / 2.6inHole Diameter: Approx. 0.5cm / 0.2inTotal Height: Approx. 4.5cm / 1.8inTotal Length: Approx. 8cm / 3.1inWidth: Approx. 1.8cm / 0.7inWheel Grooves: Approx. 1cm / 0.4inWeight: Approx. 237g / 8.4oz.Package List:4 x Ladder Pulley WheelNote:1. Please allow 0‑2 cm error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.3. Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.