hi bill.......
michelle is talking about
these I think ...they are "not quite" whistle tips ...
but are rubbery soft. I like them & the ce2's
...they are sold out @ the moment @gotvapes ,on the way tho I think?
But I think I have seen other sites that are also selling them separately.
808 drip tips should be the same as 901/510 tips ...
I use them in all the 3 things .
they are sold in different materials and a bunch of different shapes ,
I don't think I have ever seen a rubber/soft whistle tip ...
may have missed them ....
hopefully someone else will chime in here w/what you are lookin' for ....