200x50 Permobil Black Urethane Caster Wheel.
Item Num: CW710B
MSRP: $73.75 ea. 

DESCRIPTION:
This 8x2 replacement caster wheel features a flat free, multi-rib tire in black on a silver hub. The hub width is 1 5/16" measured from bearing to bearing and is sold individually. Two bearings, replacement screw, and dust cap are all included.