Easily solve the annoyance of uneven furniture. Built in high-quality steel, the 1.75 in. steel inserts with 3/8-16 in. precision threads and the large, commercial-quality 1 3/8 in. diameter, 1/2 in. thick base ensure strong support and height adjustability (from 3/4 in. to 1 ¾ in.) to hold even the heaviest pieces of furniture in place. Each set of 4-levelers is combined to support up to 2,640 lbs. of weight. We also took into account the diversity of the floor. The perfect combination of universal nylon base and high density thick felt mat, whether it is hard wood floor, smooth tile, or soft carpet, can easily cope, both protect the floor from scratches and harsh noise, and ensure that the furniture is stable. The installation process is simple and fast, no professional skills are required, you can easily get started. If your furniture legs are already equipped with 3/8 in.-16 threads, screw directly into the leveler; If not pre-threaded, simply pre-drill a 1/2 in. hole and insert a locking nut with mounting screws to secure and adjust to your desired height. Whether it is new furniture or old furniture transformation, it is easy to achieve the perfect level of furniture. Material: Metal.