Series 30 3" Rigid Light & Medium-Duty Casters; LOAD=270 lbs

Rigid Polypropylene Wheel, Radius 2-3/8". Formed from a single piece of heavy-gauge steel, deeply corrugated to withstand stress and prevent distortion under full-rated load
Lightweight, single-piece aluminum design provides strength, durability and corrosion resistance
Single ball raceway with hardened and polished ball bearings
Kingpin riveted and coined for durability in rated service
Corrosion-resistant zinc finish.