They are kind to all floor typesThe patterned corners maintain friction between the appliance and the trolley Tight locking extensions to maintain strength Made of quality material this fridge stand base is durable yet solid anti corrosion can not scratch the floor Easy to put together.Brakes on each wheel makes it stable and firm, prevents from shaking and moving, ensures safety. The movable wheel base features stainless steel pipes,with strong bearing capacity.Perfect for placing/moving washer and dryer, refrigerators, washing machine, air conditioners, cabinet, freezers etc.Product Name: Stainless steel baseProduct size: 60 × 45 × 15cm, 60 × 45 × 20cm, 60 × 50 × 15cm, 60 × 50 × 20cm, 60 × 55 × 15cm, 60 × 55 × 20cm, 60 × 60 × 15cm, 60 × 60 × 20cmProduct color: picture colorProduct material: stainless steelNumber of products: 1Product Process: Metal ProcessStructural process: weldingUse object: washing machineInstallation instructions: free installationWe highly appriciate all customers' opinions to improve the selling ,also if anything you unsatisfied, pls contact our customer service department for probable best solution.?Please contact us with any questions. We appreciate your business.