hope this is OK. If not delete it and accept my apologies.
I bought some cheap tapered router bits from this place once, and today they sent me a add, with this in it
I have been using Thien on my two shop vac's, but I still clog the filter about every 30 gallons of dust. For that price I am tempted to try one, but curious if anyone else has tried one from there? Appears to be good reviews, with the exception of the < 2" ports.