✅【1/4"-20 UNC Furniture Levelers】Not compatible with metric M6/M8. ⚠️Ensure your existing furniture's threaded hole is 1/4‘’ (6.35mm) for a proper fit. Measure the leveler's outer diameter（avoid ruler for accuracy） and thread count: Refer to the second image for detailed specs before ordering. ✅【Non-Slip, Waterproof Table Feet】Achieve ultimate stability with our 1/4 adjustable rubber feet, designed for furniture on any surface. These durable, filled rubber levelers provide a non-slip, waterproof grip, perfect for indoor and outdoor furniture. ✅【1/4"-20 Adjustable Furniture Feet】Our 1.25" tall levelers feature a 1/4-20 x 0.75" thread length and 1" base diameter. Use these to add 0.5" to 0.85" in height to chairs, desks, dressers, patio tables, end tables, customizing the overall height as needed. ✅【Quick & Easy Installation】For furniture legs with 1/4"-20 thread, simply screw in the leveler to adjust. For T-nut insertion, drill a 1/3" hole; for Insert nut, use a 3/8" hole. A 5/16" drill bit works for both nuts, depending on whether you're working with hard or soft wood. ✅【Packing List】This set includes 12 steel screws, package does not include any nuts. If you have any issues with your order, please contact us and we will resolve the issue promptly. Adjustable Furniture Feet Levelers These adjustable furniture levelers help save your furniture! No more folded cardboard under table leg just to have a peaceful sit Easy to install and adjustable height as your require. Suit for various purposes, stops wobbling on uneven floor and reduces vibration, keep your furniture and floor from being scratched and damaged, also can reduce noise while moving the furniture, allow removing furniture at ease. They work out perfectly as replacement in your table, office table, sofa, couch, ottoman bench, chair, bed and more!