8 x 1-1/2 poly caster has convex solid rubber tire that provides minimal rolling resistance on hard flat surfaces, but provides a wider surface contact area when rolling on soft earth, carpet, etc. Ideal for wheelchairs being used outside frequently on rough terrain.

1" hub width fits most ultralight wheelchairs using 8" casters. Precision bearings are 5/16" axle size.

NOTE: overall caster wheel height is 7 3/8".