SMOOTH GROOVES. Enjoy velvety rich aromas from the unique combination of the Swiss and Tree percolators. The Swiss perc, named for it's resemblance to Swiss cheese, allows aromas and water pass around the larger holes, filtering and cooling. The tried and true Tree perc features multiple arms that descend into the water for increased diffusion. Double the smooth factor with the Swiss Tree. Combo of Precision & Classic size - barrel size of 38mm but same height as Classic. Logo may vary.