first end 105 and the casing second end 110 the flex tube 400 at the flex tube first end 405 is interconnected with the fluid tube second end 310 by connection of the flex tube first end 410 flex tube connection means 420 and the fluid tube connection means 320 at the fluid tube second end 310 the flex tube 400 at the flex tube second end 410 is sized to be received and is received through the casing slot 120 and the telescoping tube slot 240 the flex tube second end 410 flex tube connection means 420 interconnects with the telescoping tube 200 at or proximal the telescoping tube second end 215 tube connection means 220 or at the telescoping tube first end 205 or intermediate the telescoping tube first end 205 and the telescoping tube second end 210 it will be recognized by a person of ordinary skills in tubing arts that tube connection means 220 may extend from the telescoping tube second end 210 toward the telescoping tube first end 205 where interconnection may be made between the flex tube 400 and the telescoping tube 200 in the preferred embodiment the fluid tube 300 and flex tube 400 are high pressure tubing suitable for.