4" x 1-1/2" Phenolic Wheel with 3/4" Bore
2.5" x 1.25" Swivel Thermoplastic Caster with Brake
3.5" x 1.25" Rigid Polyurethane Caster
4" x 1.25" Rigid Hard Rubber Caster
4" x 2'" Phenolic Wheel with 3/4" Bore