Both sizes come in total-lock, which allows you to lock both the wheel and the swivel component, or a free-swing swivel version. 5" tires are red with a black hub, and are load-rated to180 pounds per tire. 3" tires are black with gray hub, and are load-rated to 150 pounds per tire.
3" diameter casters have a overall height of 4-1/4". 5" casters have a overall height of 6-1/4". Mounting plates on all measure 2-5/8" x 3-3/4".
Screws not included ( 1/4" dia. lag screw is recommended).
