induction hose diameter 172 phase 2

[sinner]

ok so the pipe that comes off the throttle body an joins to the air box does anyone know the diameter of the end that joins the airbox just i havent got my car to check at the moment as its being tinkered with an im wanting to order a silicone or alloy joiner for my induction kit

 

[172Ben]

searched?

 

[sinner]

i have a little but not finding what i want cause i want a joiner that goes over the original induction hose of the 172 so therefore if i new the diamter i could go a couple of mm bigger