72 Inch Vertical Boring Mills 72 Inch Cinn. Hypro Vertical Boring Mill/VTL Max Swing 77 Inches, 65" Under The Rail, 40 HP, 60 Max. Tabl. RPMs, Two Swiveling Ram Heads, Side Hd., 4 Jaw, 1941, Good Cond. $59,500. 72 Inch King Vertical Boring Mill/VTL Max Swing 78 Inches, 61" Under The Rail, 40 HP, 120 Max. Tabl.