Features: Directly mountable on cylinder/valve ports, Can be rotated by 360 degree, Fine regulation of air flow, Nickel plated body, Male threads(R) teflon coated & Elegant design and finish. Specification: Inlet Thread Size - M5 R 1/2 R 1/4 R 1/8 R 3/8, Tube Dia - 4 6 8 10 12 Mm, Operating pressure range - 1-10 Bar, Free Flow in LPM - 60, 100, 200, 400, 550, 650, 1100, 1300, 1400, 1750 &1900, Control Flow in LPM - 45, 50, 100, 140, 350, 420, 450, 930, 1000, 1050, 1250, 1500, 1600