Product Size: 24 pack cap is approx 1-1/2" in diameter, thickness 0.08",and 0.5" height, plastic and clear Prevent Damage: This component can effectively reduce the friction between the furniture and the floor; Protect the floor from damage or prevent scratches on the floor; At the same time prevent damage to the table or chair feet Product Package: Includes 24 outdoor patio furniture furniture glides cap replacement pieces Tips: This item is for a 1-1/2" size from the measurement from the inner diameter of the chair or foot “cup” area where the glide should be installed Warm Tip: Disconnect the power before installing this part;Wear gloves;Before selecting the correct wrought iron chair leg caps please check if the old wrought iron chair leg caps matches the size of wrought iron chair leg caps This smooth plastic 1-1/2" glide cap will protect your patio furniture from any damage because of some forced movement,and insulate the furniture legs from humid condition. For easier installation,you can also soaping it in hot water to soften them up; 1.Firstly, find a dry towel to protect the floor and prevent wear during the measurement process. 2. Wear work gloves to protect hands and prevent scratches from chair feet 3. Clean internal dirt and repair damaged metal parts 4. Measure the inside diameter of the foot of the chair. 5. After measurement, select the appropriate product.