The furniture wheel is made of alloy, and it is safe and non-toxic. It is easy to install the wheel, just fix the wheel and use. The wheel can be used repeatedly, abrasion-resistant and durable for long time use. Features: High quality: made of alloy, smooth and it can bear the weight and don't make noise. Easy installation: easy to install the wheel, convenient to use. Flexible wheel: the wheel is flexible, and easy to move direction and pull the furniture. Reusable and durable: the wheel can be used repeatedly and durable for long use. Be friendly to your floor: the wheel is smooth and abrasion-resistant, and it will not scratch your floor. Specifications: Condition: 100% Brand New Material: Alloy Style: Brakeless, Brake(Optional) Wheel Size: 6.8*5*4cm/ 2.67* 1.96* 1.57in Base Size: approx. 4.7*4.7cm/ 1.85* 1.85in Weight: approx. 130g/ 4.58oz Package List: 1* Wheel Notes: 1. Please allow 0-2cm error due to the manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard. 1、High quality: made of alloy, smooth and it can bear the weight and don’t make noise 2、Easy installation: easy to install the wheel, convenient to use 3、Flexible wheel: the wheel is flexible, and easy to move direction and pull the furniture 4、Reusable and durable: the wheel can be used repeatedly and durable for long use 5、Be friendly to your floor: the wheel is smooth and abrasion-resistant, and it will not scratch your floor