Stainless steel with Teflon PTFE® stopcock. Solid and stable on the benchtop. Designed with three vacuum outlets, each with leakproof, two-way valve and vent port. Each outlet securely holds a No 8 rubber stopper and the stem of the filter funnel without interference. Teflon stopcock on each valve shuts off flow when fewer than three outlets are used. Barbed fitting accepts 9.5mm I.D. tubing.