Hejnar Photo 6.0 Inch Long 3/8 Thick Rail. Made in U.S.A Multipurpose 6.00 inch rail with two captive style slots and engraved metric scale. 3/8 thick 6.00 inches long. 1.5 inches wide. 3/8 inch thick. Weight 2.5oz (72g). Precision C.N.C. machined from 6061-T6 Aluminium. Stainless steel hardware. Black hard coat anodized surface.