The 35° angled cassette features a large writing surface and two side panels ideal for labeling. The one-piece design allows for the lids to be opened and closed repeatedly without the lid getting detached from the base. The lid securely locks into the base and keeps samples safe and secure. The 35° angled cassettes can be manually loaded into most cassette printers. Large textured writing surface Large thumb tab on the front of the cassette for easy opening The lid stays attached for repeated opening and closing