Inflate the 5" fully and tie off with a loose knot, shape this balloon a little.
Soft Knot.
You need to slide the knot away from the 5" and 350 balloon
later for the thinning look to the end of the cucumber.
Cut 4 fingers off the end of the 350, to get a thinner look to the 350 when
inflating stretch the 350 balloon while holding the 350 close to the 5" round.
If air gets passed the 5" round it will damage the look of your cucumber.
You can see the thinning process at the centre top of the 350 cucumber.