Rolled tone holes. F key bridge. With its extra large bell and rolled tone-holes, there seems to be no doubt that Keilwerth based this great horn on the legendary Conn Chu -Berry of old, with the tremendous added advantage of a sprightly modern action and an extremely comfortable and accessible keyboard. Add a Hi F# to the mix, along with the universally recognized high quality of German workmanship and this horn is unquestionably a real contender. The continually growing number of loyal customers, and great players that show unabashed enthusiasm for this horn speaks volumes to its many virtues.