[Good Material] - Made of good plastic, has an adjustable height, is not easy to deform, and has more stable support. This insert protects your beautiful hardwood, ceramic tile, and vinyl plank floor from marring.[Keep Balance] - If the floor is rough or the leg of the product is bad, you can install it at the bottom of your product to stay balanced. It can effectively protect the product during the movement, prevent scratches, and reduce noise.[Easy to Install] - Each chair leg plug comes with ribs, only requiring lining up with them before tapping it into position. Ribs provide a secure fitting and prevent the need for additional adhesives.[Scope of Application] - The adjustable leveling foot is for office or household furniture. such as mechanical equipment, fitness equipment, racks, TV stands, tables, shelves, beach chairs, desk legs, and so on.Specification:Material: PPPlug Size: 30 x 30 mm / 1.18" x 1.18" (L x W)Leveling Feet Size: 28 x 11 mm / 1.1" x 0.43" (Dia. x H)Thread Specifications: M8 x 1.25 x 17mmAdjustable Height Range: 15-25 mm / 0.59" - 0.98"Package Includes: 8Sets x Plastic Furniture Chair Leg