9399 Size: 4" Features: -Polypropylene general duty rigid caster.-Zinc plated hardware.-Black polyolefin wheel.-Lightweight.-Non-marking wheels impervious to water with good chemical resistance.-Long wearing and low in cost.-Package type: Carded.-Load capacity: 125 lbs (2"), 175 lbs (2.5"), 210 lbs (3"), 225 lbs (4"). Dimensions: -2" Dimensions: 2.5" H x 2" W x 2.75" D.-2.5" Dimensions: 3.13" H x 2.5" W x 4.5" D.-3" Dimensions: 3.75" H x 3" W x 4.88" D.-4" Dimensions: 4.75" H x 4" W x 5" D.