Precision constructed for sturdiness, these Tremendous Heavy Duty Castors are perfect for the demands of industrial environments. Featuring a precision bearing headset to provide ultra easy swivel motion & a fully welded metal body inside a zinc plating to deliver corrosion resistance. The Urethane coating on these super heavy duty http://polyurethanecastors98530.frewwebs.com/16029947/castors-can-be-fun-for-anyone