Herrenknecht AG. Schlehenweg 2 , Schwanau , 77963 Germany About Solutions products services Publications videos Downloads Companies Herrenknecht AG. Videos Boxhole Boring Machine (BBM) Video Boxhole Boring Machine (BBM) Video 0 Share Fast construction of slot holes with small diameters Customer comments No comments were found for Boxhole Boring Machine (BBM) Video. Be the first to comment! Add your comment Publish your comment Great! comment successfully added!