... american style floor lock,all carbon steel construction designed for heavy work rubber base size could be changed as ... :all steel construction floor lock with zinc plated,designed for heavy work.Its bearing could be:400KGSrubber base could ... and fix the trolley on on the floorsize:designed for 4",5",6",8"caster ,and the extended and ... the caster from long time working floor lock for caster 2,floor lock