"Heavy duty polymer and aluminum construction casters have 400-lb. capacity each Set of three have a 1050-lb. capacity. Polymer surface prevents corrosion and damage to snowplow edge. U.S.A. Compatible With Snowplow, Size in. 2 3/8, Includes 3 Caster, Capacity lbs. 1,050. Wheel size 2 3/8in. Base 6 1/2in. square 1 of the wheels has a lock feature"
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