Safco Products 5026 Mobile Stand, Tropic Sand Mobile document storage stand for large art and engineering documents 12 pivot brackets that swing wide with weight capacity of 240 lbs. or 20 lbs. per clamp Steel construction with durable powder coat finish, mobile on four 3" ball bearing swivel wheel casters, two locking Holds up to 12 Safco Products Hanging Clamps Models 50016, 50026, 50036, 50046 and 50056, sold separately Use with Safco Products Data File Extension Model 5056 for extra storage, sold separately