MEC - Model 206021NB -Double Flowmeter On Straight Bar With 3/8` Nut & Liner

O2 Low 0.15-4.5Lpm Double Flowmeter 50mm Back Bar – 3/8″ Nut & Liner; Anodised Aluminium Body, Acetal Spindle, Polycarbonate Inner and Outer Tube, Nitrile O Rings, White Acetal Plastic Tubing Nipple.