Storage Series Cylinder Cage, Locking Door, (12) Hi Pressure Cylinders ORS NASCO Patented two step ratchet mechanism requires Patented two step ratchet mechanism requires fewer strokes per cut Precision ratcheting mechanism holds cable tight and allows rapid Foam gel interior padding for superior comfort Extended large cap absorbs pressure while supporting knee Breathable neoprene lower straps secure below the knee for comfort all day long Designed for storage and transportation of high pressure cylinders Constructed of gauge square tubing and expanded metal Features a forklift bottom and a lifting eye to ensure maximum portability Unique E Track strapping system keeps your cylinders secure