Manifold, High Vacuum Solid Glass Stopcocks [M280], Synthware

With 4mm double oblique, high vacuum solid glass stopcocks precision ground with corresponding numbers on barrel and plug. Solid glass stopcocks have constant pressure retention devices. Beams are 20mm O.D. with front-left and rear-left-right 10mm hose connections. Distance between stopcocks is 75mm center to center.