Feature: 1. Silent bearing: Built-in multi-smooth ball, silent sliding. 2. Thickened multi-bearing: The stability of multi-bearings increases the stability of the hanging wheel, which is more stable when sliding. 3. Thickened fixed iron sheet: Thickened fixing frame can more firmly hold the sliding door. 4. Solid body: High load-bearing, designed based on gravity and high load-bearing, better use effect. 5. Removable accessories: L-shaped removable insert design, quick installation and easy removal. 6. Anti-impact head: In order to prevent the strong impact force from damaging the hanging wheel, the anti-impact part has been specially thickened. 7. Multi-layer plating: Effective protection of the hanging wheel, increase the acid resistance, alkali resistance and corrosion resistance of the hanging wheel. Specification: Item Type: Sliding Door Roller Material: Zinc alloy body, cold rolled steel parts Product Load: 1 pair total load of about 75kg Product Wheels: 12 Wheels Scope of Application: Indoor Sliding Door. Package List: 2 x 12 Wheels Door Rollers1 x Accessory Pack