Uxcell 8mm Screw Stem 1.5" Wheel Plastic Swivel Caster, 4 Piece Product name : threaded stem caster wheel; type : 360 degree rotation dual wheel Wheel size : 4 x 1Cm / 1. 5" x 0. 4"(Dt); total size (approx. ) : 5 x 3. 8 x 6. 5Cm / 2" x 1. 5" x 2. 6"(Lwh) Threaded dia. : 8Mm / 0. 3"; thread part length : 15Mm / 0. 59" Material : plastic, metal; color : black Weight : 185G; package content : 4 x threaded stem caster wheel