Description: Gate wheel is made of high-quality rubber and metal material, good toughness, impact resistance, wear resistance, durability, long-term use. Gate helper wheel has flexible rotation, silent and smooth, bid farewell to dullness, and do not hurt the floor. Spring loaded casters, suitable for any terrain, used for iron fences, warehouse gates, uneven roads, etc. Simple installation, easy to install and convenient to use. Heavy duty caster, the wheel has a maximum load capacity of 220lbs/250lb. Specification: Material: rubber + metal Diameter: 16cm/6.30inch Package Includes: 1x Spring-loaded Casters(other accessories demo in the picture is not included.) Note: Conversion: 1inch=2.54cm, 1cm=0.393inch Please allow slightly 0-1cm difference due to manual measurement. Colors can appear different depending on light and how the listing is viewed. Thanks for your understanding and attention. Wish you a pleasant shopping experience! Gate wheel is made of high-quality rubber and metal material, good toughness, impact resistance, wear resistance, durability, long-term use. Gate helper wheel has flexible rotation, silent and smooth, bid farewell to dullness, and do not hurt the floor. Spring loaded casters, suitable for any terrain, used for iron fences, warehouse gates, uneven roads, etc. Simple installation, easy to install and convenient to use. Heavy duty caster, the wheel has a maximum load capacity of 220lbs/250lb.