These Diorama (Unit) Washers come in a set of 5 25x70mm Oval high-quality, plastic washers. The 25x70mm Oval Unit Washer has an interior width of is 26mm by 72mm long Custom Unit Washers for use within TABLEWAR's Modular Display and Storage Tray System for use with hobby miniatures and models. These Unit Washers have been designed to give you the ultimate flexibility in arranging the TABLEWAR® Unit Tray or Diorama Tray. Mix and match them with other sized Unit Washers. Arrange them, secure the, use them. You may attach them to a plastic or a metallic surface. Your hobby miniatures and models sit within the interior of these washers.