XS Scuba Miflex High Pressure Carbon HD HosesMiflex High Pressure Carbon HD Hoses Miflex HP hoses are 35% thinner (7. 8 mm) and about half the weight of traditional rubber hoses. These quality hoses use electroless nickel plated brass fittings on both ends. They are approved for use with up to 40% oxygen. FEMALE FITTING 7 16 x 20 female threads Strain relief with shock absorber 14mm deep airspool well MALE FITTING 7 16 x 20 male threads Strain relief with shock absorber Green Viton o ring HOSE