Precision Medical EasyDial Reg 540 Nut Style 0 15 LPM Oxygen Regulator W011 13 M 050 W023 13 M 050 W023 13 M 055 W023 13 M 060 W023 13 M 065 W023 13 M 070 certified pre owned W023 13 M 050 W023 13 M 055 W023 13 M 060 W023 13 M 065 W023 13 M 070 W023 13 M 075 W023 13 M 080 W023 13 M 085 W023 13 M 090 W023 13 M 095 W023 13 M 100 W023 13 M 110 W023 13 M 120 W023 13 W 050 W023 13 W 055 W023 13 W 060 W023 13 W 065 W023 13 W 070 W023 13 W 075 W023 13 W 080 W023 13 W 085 W023 13 W 090 W023 13 W 095 W023 13 W 100 W023 13 W 110 W023 13 W 120 W023 13 X 050 W023 13 X 055 W023 13 X 060 W023 13 X 065 W023 13 X 070 W023 13 X 075 W023 13 X 080 W023 13 X 085 W023 13 X 090 W023 13 X 095 W023 13 X 100 W023 13 X 110 W023 13 X 120 Similar to how glasses can comfortably stay on a person’s face Regulate the flow of oxygen as needed Includes metal ring