Adjustable nozzle for a 2.5" shop vac hose.
I have a huge Rigid shop vac which sucks up small children and scares the nuns. I also have a Dust Deputy dust collector on a 5g bucket and if the hose got plugged the bucket would collapse due to the suction. I also find it very annoying having to open the dust collector to fish out my painter's cones when they accidentally get sucked up.
With this adjustable nozzle I can set the suction to a nice gently flow which I use to vacuum around the plastic sheet covered area where I am applying stain and polyacrylic to wood projects. I can easily vacuum over the plastic sheeting without sucking up the sheeting and collapsing my dust collector bucket.
I use this diffuser for my shop vac exhaust port to prevent stirring up too much dust
3 to 5mm brim for bed adhesion