The material is hard enough to be sturdy and durable.
Specification:
Material: Steel, Nylon, Silicone
Shortest Length: 45.5cm
Longest Length: 70cm
Width: 5cm
Height: 4cm
Load Bearing: Up to 300kg/661.39lb
Package List:
2 x Furniture Appliance Roller
2 x Non Slip Pad