I needed some filler neck hoses in a size that did not seem to exist. There accomplished the task and saved the day for me.
*1) Insert this plug into one end of filler hose to make inner diameter smaller.
*2) Or slip over filler neck to make outer diameter larger.
You can use multiple reducers slipped within each other to achieve bigger gaps.
Each reducer equals 1/4" gap.
Fits: 1-1/4" Inner Diameter Hose.
Reduces Hose To: 1" ID
Inner Diameter: 1"
Material: Nitrile Buna Fuel Grade Rubber.
Note: Order comes with one reducer.