Description Description Stainless Steel Conflat Flange Vacuum Manifold 5/8 ID x 3/4 OD,SS Pipe 2ea with Conflat Blanks 6ea threaded holes per flange with 1 hole center to hole center overall dims 22 x 6.5 x 1.5 , SS Ceramic pieces + attached flanges are 3 5/8 View AllClose