? Made From The Same Composite Material As Cambro Basics Shelving Extremely Strong ? Comes As A Knockdown Pack - Clips Together For Assembly ? Ultra Quiet Nylon Castors That Offer A Superior Glide ? Rails Can Take Heat Up To 200 C ? Castors Clip In And Can Be Easily Replaced ? Weight Bearing - Up To 45Kg'S Per Rail Set ? 4X Swivel Castors With Foot Brakes