Bibow Industries all NEW twin patented (US 9,027,785) 40-60cf Nitrogen Tank Holder for trucks, vans and all vehicles. Made from 3/16+" mild steel. The Ultimate twin 40-60cf Nitrogen Tank Holder is FULLY welded and has 6-8 holes for through bolt attachment to vehicle. Most importantly, the Nitrogen Tank Holder Sleeves contain 2 locking "T" handle / thumb bolts to purposefully lock the 2 nitrogen tanks into the holder - all with a simple twist! The Twin Nitrogen Tank holder is constructed from rigid steel to exceed ALL D.O.T. and O.S.H.A Type 2 gas holder requirements. Purposefully engineered to last a lifetime! Fits ALL 40-60cf Nitrogen Tanks. RMA for returns. 30% restocking fees. Product received may look slightly different than images provided. IF you lie to Amazon in writing about this product, its features, functions, we will charge 50% restocking fee