7 Accessories for material production and processing machines, namely, work piece holders for fixing work pieces in the machines, in particular clamps, locators, supports, compartments, baskets, grids, trays and frames for holding clamps, locators, supports, compartments, baskets, grids, trays for holding and securing work pieces during machining; Accessories for material production and processing machines, namely, work piece holders for transporting work pieces to machines, in particular, clamps, locators, supports, compartments, baskets, grids, trays and frames for holding clamps, locators, supports, compartments, baskets, grids, trays for transporting work pieces to the machines