Factory-installed kick-out wheel has two 3.5in. casters that provide 4-wheel support. Works best on smooth surfaces - for rough terrain, see Item# 144373. 850-lb. capacity. Must be purchased at the same time as Item# 144323 to be factory installed. U.S.A. Tire Size H x W in. 3 1/2, Tire Type Caster, Compatible With Northern item# 144323, Includes 1 Pair.
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