Specifications:Material: Iron, PlasticThreaded Size: M8 x 38.5mmBase Height: 11mm / 0.43-inchAdjustable Height: 16mm-45mmBase Diameter: 35mm / 1.38-inch Package Contents:8 x Furniture Levelers Descriptions:Size: M8 Threaded, metal and plastic base. If the mounting hole size is M8, you can use these leveling feet to install your product feet.The length of the screw can be adjusted according to the needs during the use.They are particularly suitable for the product that is swaying during the use due to rough floors or bad leg of the product.Plastic Base: It does not harm the floor and without noise during the use.It can protect your furniture, beautiful hardwood, ceramic tile and linoleum floors from marring and scratches.