No More Folded Up Cardboard Under Table Legs These furniture leg levelers with felt allow easy leveling of furniture at home, office, restaurant, school or caf, to match in same height, and allows raising your furniture.Adjustable Furniture Levelers- 1 Long steel insert with 1/4-20 thread 1/2 Thick base with high density feltSturdy 1 Diameter Base and Fully Adjustable Height from 0.5 to 1.25 for Maximum Support and Adjustability.Easy Installation- For furniture legs with existing 1/4-20 thread, simply screw in the leg leveler to adjust the height. Or, pre-drill a 5/16 hole and insert the t-nut for universal installation, screw in the Levelers and adjust to the desired height. (Comes with Installation Instruction.).High Density Felt Floor Protectors - Pre-installed with high density thick felt to protect your hardwood floor from scratches or harsh noises which works far better than the stick-on pads.Heavy Duty and High Quality- Commercial quality standard furniture levelers, T-nuts and thread insert are made of stainless steel that support over 100lbs per feet, so a set of four can support furniture over 400lbs .