Thickness: 1/8" 3/16" 1/4" 5/16" 3/8" 7/16" 1/2" 5/8" 3/4" 1" 1-1/8" 1st Leg: 1/2" 3/4" 1" 1-1/4" 1-1/2" 1-3/4" 2" 2-1/2" 3" 3-1/2" 4" 5" 6" 7" 8" Length: 20' 28' 30' 40' 50' 60' 2nd Leg: 1/2" 3/4" 1" 1-1/4" 1-1/2" 1-3/4" 2" 2-1/2" 3" 3-1/2" 4" 5" 6" 8"