This 1.5" Medium Tri Clover Compatible Ferrule has a .065" wall and a 0.846" length. Medium ferrules are typically welded into a vessel wall or lid like a Hot Liquor Tank, Mash Tun or Boil Kettle. The medium ferrule works well if you're welding it to tubing. This fitting is slightly shorter than a long AMP ferrule which results in a more compact fit. Tri Clamp ferrule is construed of 304 stainless steel.