A.N. -06 ST. Black Aluminum Reusable Hose End (6 Pack) of Fittings A.N. -06 (9/16-18 Thread) Swivel Nut 37 Deg. Concave Seat Fits -06 Hose (.34" I. D.) either SS braided or Nylon braided rubber hose. Material: Aluminum Anodized Black Field Attachable And May Be Reused (Reusable)