06-816 CST/berger 5 Sections, 16ft Aluminum Telescoping Rod Inches, Tenths features 5 sections, marking scale on backside for quick overall height measurements. 06-816 CST/berger 5 Sections, 16ft Aluminum Telescoping Rod Inches, Tenths is made of aluminum construction, water resistant and features polycarbonate lock buttons and allows for smooth extension and prevents unnecessary clattering and sloppiness.