Diamond 1400 Interested? Please Contact us All volumes can be bolted on or screwed on, are made of 13 layer ¾ inch (18 mm) high-quality birch plywood, and coated with our special Blocz Texture. - Long volume (Can be used like an arete)- Large volume- Symmetrical volume - Bomber T-nuts (metric T-nuts available upon request) Length 55 inches Height 10 inches T-nuts 100 Design options Base plate