I use a Festool CT 26 to collect power tool dust. The problem lies in connecting Festool dust collection hoses to products from other manufacturers - no Festool adapter works very well, and those that do are absurdly expensive (about $20 each). This little plug set arrived last week and works with all my power tools. , a CT-26 vacuum, an old Bosch shop vacuum, my Bosch miter saw, Bosch 4100 table saw and even my 25 year old DeWalt carpentry machine. And for $10 it's almost free!