Models View all 4 inch Caster Wheel 7 207 0 3 inch Caster Wheel 6 317 0 2.5 inch Caster Wheel 9 741 0 2 inch Wheel (Swivel) 16 915 1 2 inch Wheel (Swivel) w/ & w/o Brakes 19 1017 0 1.5 inch Caster Wheel 9 558 0