EXTENDABLE: The KEZERS KGR9 aluminum grade rod has three lockable, telescoping sections that can be adjusted to a maximum length of 9 feet and collapse to 42 inches. Its rectangular design makes it simple to hold and provides flush alignment with flat surfaces. DURABILITY: The KEZERS KGR9 leveling rod is made of 1mm thick aluminum alloy and has a weather and corrosion-resistant ink imprint. Furthermore, the aluminum bottom is made of stainless steel, which increases the durability of the grade rod. MARKS CLEARLY :The grade rod graduations on both sides,the black and red graduations ensure maximum visibility. Front side marking in feet/8ths,back scale in feet/inches,which allows users to read heights at eye level and easily read overall height. SECTIONAL JOINTS LOCKING BUTTONS: KEZERS telescoping rod features injection-molded sectional joints and locking buttons for easy gliding and efficient use. The high-strength locking buttons between sections provide extra stability while working by securing the sections and preventing slippage. PORTABLE:The grade rod includes a waterproof soft carrying bag,and made of lightweight aluminum alloy,portable and easy to collapsible to 42 inches for easy storage and transportation.