9441 Features: -Appliance caster.-Easily moves refrigerators, freezers, dryers, and other heavy appliances.-Simply remove old glides or levelers, screw appliance caster into threaded sockets.-Provided with 4 jam nuts for easy alignment and height adjustment.-Not recommended for vinyl floors.-5/16" Stem, 18 threads per inch.-7/8" White dual wheel.-4 Per card. Color/Finish: -Finish: Chrome. Specifications: -Split 4 wheel design permits easier steering. Dimensions: -Dimensions: 7.63" H x 4.88" W x 2.38" D.