Features for the LETER L Bar Copper-Coated Mini Prism

•25.4 mm diameter
•8.92 mm offset
•2 arc second accuracy
•500 m range
•Copper-coated prism
•90-degree angle
•75 x 75 x 15 mm L-bar
•Black aluminum holder and housing
•Water-resistant
•has 1 screw hole 3/8" wide, and a 1/3" hex wrench to adjust the tilt