This is a funnel with a screen built in that I use for returning powder to its bottle if I have to dissassemble mistake ammunition. It allows me to pour the contents into the powder bottle without dropping projectiles in as well.

It is designed to screw on to the top of a 1 pound Hogdon/IMR/Winchester powder bottle as seen in the picture.

Model #2 has portions of the th has a full threadread spaced around the inside of the lid and is a little easier to print and remove supports.

Model #3 Has a full thread around the inside of the lid