1. Silent universal wheels, strong load-bearing capacity, easy to install 2. Smooth rotation without any noise 3. Made of durable PVC material, environmentally friendly, safe, not easy to corrode, more stable, wear-resistant and durable 4. Excellent materials and mechanical structures make the pulleys more bearable and smoother in operation. 5. Wheel diameter: 2 inch 6. Plunger specifications: 11 x 22mm
