They work.

Haven't tried them yet but looks promising

Efficient. Nothing to Say.

The screens work as they should. Convenient to buy these 5-packs.

Fits Perfectly. Thank you

Put a screen in my new Gandalf pipe with a bit of tobacco. The screen prevented ash from entering the stem. Result was a slow, cool smoke

I was getting bits of ash and tobacco in my mouth at the end of the smoke. This screen stopped that. Press it onto the bottom of the bowl: It hugs the bottom and seems to disappear.

These are just the right thing to prevent tobacco from clogging up the bowl. They fit just right into both flogglewerks pipes I've ordered. It's like they were made for each other! Unsure just yet of how they may affect the cleaning process but doubt it will cause any concern. The order I placed was for 2 packs of 5 screens and I received an extra. So thanks for the pleasant "mistake" I hope it didn't get anyone in trouble

These are useful if you find that the wood of the upper floor around the hole burns, sending bits of charred wood up the stem. This has been some problem for me. I've been able to use a screen more than once, but eventually they need to be replaced. Be careful not to lose a screen when emptying ashes from the bowl.