These push-pull wheels are made of materials and are used to easily move the telescopic ladder in the home, don't have to worry about damaging the floor. Suitable for most telescopic ladders and balance poles on the market. Easy to use, simple and convenient. Stable and practical, , safe and durable, it will bring you a good experience. Features - Color: Black. - Material: Aluminum alloy, rubber. - Size: 8.50X8.00X3.50cm/3.34X3.14X1.38in. -Note: Whether the color is black or silver of the screw is random. - Selected aluminum alloy and rubber materials, long-term safe and durable. - Special design ensures that the noise can be reduced when sliding the telescopic ladder. - They are simple , but very practical to use, bringing you great convenience. - and practical design, beautiful appearance, easy to install and use. - Stable and practical, , safe and durable, bringing you a good experience. Package list: 2