Heavy Duty Large Furniture Leg Levelers - Easily level furniture in your home, office, restaurant, school, or cafe to match the same height. help raise your furniture, and help slide your furniture with ease! Adjustable Leveling Feet - 1.75 inch long steel insert with 3/8-16 inch thread; Heavy duty commercial grade base with 1 3/8 inch diameter and 1/2 inch thickness and fully adjustable height from 3/4 inch to 1 3/4 inch for maximum support and adjustment. Heavy Duty & 1320LBs Max Support - Commercial grade furniture levelers, T-nuts and threaded inserts are made of steel and support over 330LB per leg, so a set of four can support 1320LB furniture! For All - Universal nylon bottom that fits all floors such as hardwood/tile/carpet. Comes with a separate high-density thick felt for hardwood floors to protect the floor from scratches or loud noises. Easy Installation - For furniture legs with existing 3/8 inch-16 thread, simply screw in the leg leveler to adjust the height. Or,