Standard Rubber Caster - Swivel, 4 x 1 1/4" H-5537S - Uline
ES6X2PHN - 6"x2" Phenolic Wheel Swivel Caster
6 Inches Heavy Duty Rubber Caster Wheels Anti-Skid Swivel Casters Wheels with 360 Degree for Set of 4 (2 with Brakes& 2 Without): Amazon.com: Industrial & Scientific
5 in. Rubber Swivel Caster
Everbilt 5 in. Gray Rubber Like TPR and Steel Swivel Plate Caster with 350 lb. Load Rating 4032545EB - The Home Depot
VEVOR 4 Pack 8" Rubber Plate Caster Wheel, Heavy Duty Casters Wheels Set 4000lbs, Swivel Caster 360 Degrees, 2 Rigid and 2 Swivel Casters with Side Brake, Red - Walmart.com
VEVOR 16 PCs Polyurethane Caster Wheels 16-Pack 5-in Tpr/Thermoplastic Rubber Swivel Caster in the Casters department at Lowes.com
8 heavy duty rigid caster tpr thermoplastic non marking gray wheel