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Full & Half Hoods Series 4-Set 5-Set ..HARD.. ..SOFT.. ..HARD.. ..SOFT.. HALF-HOOD D472-HH Series.. $40.60 $40.20 $50.75 $50.25 FULL-HOOD D472-FH Series.. $44.00 $43.60 $55.00 $54.50 Many new chairs are equipped with hard wheel casters for use on carpeted surfaces only.  Hard wheels skate and slide on hard floor surfaces.  For safe rolling on chairmats, and all hard floor surfaces, soft wheel casters should be used.  Soft wheels provide traction and prevent sliding. Click HERE for Technical Information. Click HERE to return to Main Caster Page.