Twin drum rollers 2000 8,195 h United States, Chehalis, Washington7d
Twin drum rollers 1998 7,306 h United States, Phoenix, Arizona7d
Twin drum rollers 2007 3,960 h United States, Chehalis, Washington
Twin drum rollers 1999 8,551 h United States, Chehalis, Washington
Twin drum rollers 1998 4,039 h United States, Fremont, California
Twin drum rollers 2006 7,112 h United States, Longmont, Colorado
Twin drum rollers 2006 3,026 h Canada, Chilliwack, BC, British Columbia7d
Twin drum rollers 1999 9,773 h United Arab Emirates, Jebel Ali Free Zone