SIZE - Fit for Mounting Size: 0.87"x0.87"-0.94"x0.94"(L*W); Total Size(Min): 1.18" x 1.5"(D*H); Total Size(Max): 1.18" x 1.97"(D*H); Insert Total Size: 0.98" x 0.98" x 0.67"(L*W*H); Insert Thread Size: 0.94" x 0.94"(L*W); Leveling Foot Total Size: 1.18" x 1.5"(D*H); Leveling Foot Base Size: 1.18" x 0.43"(D*H); Leveling Foot Thread Size: M8 x 1.06"(D*L); Leveling Foot Size: M8 x 10.6" x 1.18"; Adjustable Range of Height: 0.39"-1.33"; Package Include: 4 Sets FLOOR PROTECTOR - This insert protect your beautiful hardwood, ceramic tile and vinyl plank floor from marring. APPLY SCENE - The adjustable leveling foot is for office or household furniture. Such as mechanical equipment, fitness equipment, racks, TV stands, table, cabinet, shelves, beach chairs, desk legs and so on. KEEP BALANCE - If the floor is rough or the leg of the product is bad, you can installed it at the bottom of your product to stay balanced. It can effectively protect the product during the movement, prevent scratches and reduce sharp noise. EASY INSTALLATION - For easy installation, each insert comes with ribs, only requiring lining up with the before tapping it into position. Ribs provide a secure fitting and to prevent the need for additional adhesives.