Image KF Bored Flange Vacuum Fitting Product Options Part Number Flange Size Material DVF-A10GA KF10 Stainless steel DVF-A16GA KF16 304 Stainless steel DVF-A25GA KF25 304 Stainless steel DVF-A40GA KF40 304 Stainless steel DVF-A50GA KF50 304 Stainless steel