1pc straight universal machine lubrication fitting including body, ring and nut.  Piping not included. Pipe size: 4mm (OD) Thread size: M5 OR M6-0.75mm pitch OR M6 - 1mm pitch UK Seller quick dispatch. Returns accepted. Combined postage with an addition of 35p per item, £2 for overseas purchases. First class signed for, Special delivery and Tracked postage options available at checkout.