[MATERIAL]: The strut is made of aluminum and the base is cold drawn steel. [SIZE]: Total Height: Approx. 360mm / 14.1"; Base Size(L x W x H): Approx. 60 x 55 x 50mm / 2.3 x 2.2 x 1.9"; Clamping Hole Diameter: Approx. 3/8"; Max. force:132lbs/60kg. [MAGNETIC STAND]: The magnetic bracket adopts switchable permanent magnet, which is easy to install on the metal surface. [UNIVERSAL KNOB]: Flexible, strong and precise rotary joint can adjust the support rod to any direction and fix it firmly. [APPLICATION]: Used to maintain the position of a dial indicator or test indicator etc. during measurement operations.