STRC-CB | Replacement Plywood Caster Board for Road/Rack Case, w/ Brakes – Sound Town
Razor RipSurf Caster Board - Multicolor, 2 Wheel Pivoting Skateboard, Surf on Land with 76 mm 360-Degree Casters, for Kids, Teens, and Adults, Unisex - Walmart.com
Wheel with solid tire - POYB-ULTRA series - HAMILTON CASTER - polyurethane / ball / Shore A