Organize and display your 10 ml Roller Ball Bottles with this 15 hole rack. Clean cut precision drilled holes are offset to easily view and grab your favorite bottles. Holes are drilled to 21 mm. These racks will hold all brands of roller ball bottles. Holes are drilled 5/8 in deep to securely hold each bottle. Each rack is crafted with specific attention to detail and sanded to a smooth finish. Bottles not included. Built from quality pine with quality craftsmanship and precision. Wood grain may vary slightly from rack to rack.