TriClamp Spray Ball 1 1/2" Revolving Thru the Wall Stainless Steel SS304 TriClamp 1 1/2" Top and 2" Thru the Wall.. Total length 7 3/4". Inside tank length is 6". Ball size is 1 3/4". * Fits 2" TriClamp port on tank. * Inlet is 1.5" Triclamp. * Ball diameter 1.75". * Total length 12.00" * 304 stainless.