Hejnar Photo Single Stage 8 inch Macro Rail - Made in U.S.A 8.00 inch bottom rail - 10.5 inch total length Height without clamp: 1.4 inches. Height with clamp: 2.0 inches Precision C.N.C. machined from 6061-T6 Aluminium. Stainless steel hardware. Black hard coat anodized surface.