Fits Our HOT-TANK: The 3/8 inch BSP female swivel nut screws onto 3/8 BSP male tank terminals, such as those on the LavaTap HOT-TANK boiling water tank Check Your Tube Size First: The push fit end is sized for 6mm outside diameter plastic tube, so measure your existing line before ordering; 8mm tube needs a different fitting What Is In The Box: 1 x 6mm push fit to 3/8 inch BSP female adaptor with blue locking clip and black flat sealing washer seated inside the nut; tank and tube not included Tool Free Fitting: Push the squarely cut tube firmly into the collet until it stops, clip the blue lock in place, then hand tighten the nut onto the terminal with the washer seated Easy To Remove: Take off the blue clip, press the collet ring in and pull the tube out, so the line can be disconnected when the tank or filter needs servicing or replacing Spec At A Glance: White plastic body, 6mm push fit collet one end, 3/8 inch BSP female hex swivel nut the other, flat rubber washer seal, removable locking clip, sold singly