This kit included :

Aluminium flexible duct 6 inch x 7-8 feet, 2 Clamps, End Cap, Aluminium foil tape, 4 Rawl plug, 4 nos. M4 X 25 SCREW , 2 nos. M4 X 13 SCREW.

Pl. Note 6inch Pipe is suitable where core cutting size is 7 inch dia . (Duct hole is 7inch dia)