DescriptionMaterial:Housing solid welded steel construction. Wheels with welded steel body and Extrathane® tread.Version:The housing is a rugged welded steel construction. Swivel castor housing with DIN 711 axial groove ball bearing and DIN 720 tapered roller bearing in the swivel head. Dust and splash-proof, with grease nipple. Precision ball bearings in the wheels.Note:Centre pin welded in, bolted and secured. Wheel axle bolted.