Fit perfectly and works exactly as described!
Ordered this as a cheap on add on to another order. Wasn't sure if it would fit on my filter take, it's probably somewhere around an inch to inch and a half wide, but this stretched around quite easily and fits nice and snug. Dont have to worry about it coming loose at all.
I have this on my pump that moves the water and adds bubbles. It's great now to order another bigger one for my filter. My tank won't be without these again. Thank you Cory for all you teach about fish and plants. You truly make this company incredible along with your staff.