Abstract: A container for retaining, supporting and transporting a plurality of workpieces such as hybrid substrates in a vertical orientation. The container comprising a base, a slide and a cover. The base has a fixed, horizontally extending block with a fixed lateral support vertically upstanding from one of its faces. It also has a plurality of v-shaped notches formed therein facing toward the opposite face of the block. The slide has a horizontally extending plate adjustably positionable upon the upper surface of the horizontally extending block with an adjustable lateral retainer upstanding from one edge of the horizontally extending plate. It also has a plurality of v-shaped notches formed therein facing the v-shaped notches of the fixed lateral support. The base and slide are formned of an anti-static material. Nuts and bolts are provided to releasably secure the slide to the base in any one of a plurality of positions.