Material: Iron.Color: Silver.Weight: 135 grams.Dimensions: 7.1 x 2.8 x 1.6 cm. (see picture for details)Quantity: 2Product information: Made of iron, strong and durable, high strength, good stability and low creep. Good wear resistance and chemical stability can be used for a long time.Product advantages: Double bearings and their structure ensure the stability and smoothness of the door when rolling. Reduces vibration, reduces noise and ensures smooth operation. Ideal for indoor or outdoor use.Wide range of uses: replacement parts, gate wheels, sliding fences, sliding window bearings, 3D printers, shower screen bearings, tank washers, dog gates, garden gates, wire rope guides, etc. Perfect for a professional (industrial setting) or as a DIY enthusiast.Ease of use: Easy to install and use. For both experienced and non-professional users. The wheel diameter is 15 mm, the wheel height is 28 mm, and the depth of the U-shaped groove is 4 mm. The U-shaped groove fits the reversing track perfectly.Precautions for use: The maximum weight is 40 kg. Iron is the main material, please do not use it in a humid environment.Product information:It is designed with silver metal double rollers, simple and convenient to use.Great accessory for entrance doors, windows, sliding doors, etc. The double roller bearing glides smoothly and smoothly, making the gate easy to slide.