Hafele's 60mm table legs are made of steel and have a static load rating of approximately 220 pounds per leg. The legs have a steel square mounting plate with an M10 bolt. Simply screw the leg into the mounting plate and then to the table. The set includes four legs, four mounting plates and screws. The table legs come in Polished Chrome, Black Semi-Gloss, Black Textured, Brushed Silver and Silver Aluminum finishes. The 80mm swiveling caster with brake has a plastic body and a black rubberized wheel and comes in Black with a choice of wheel type and Silver with a Silver wheel. The 50mm twin-wheel casters screw directly into a threaded plate and have a load capacity of 88 pounds per caster. The set includes four casters and four 60mm washers.