Unique Design: The cutter on the inner tape holder is concealed within the body, and the side switch rotates to cut the film, making it safe and reliable. A non-slip base at the bottom of the fuselage provides extra stability, suitable for any home or office. Safe Side Cutting Blade Design: The side blade is hidden in the body when not in use, and the side blade switch has a built-in child safety feature. When you finish work, be sure to put it in the \"off\" position. You'll need to apply a little force to open it with \"on\". Wide Range of Uses: Ordinary tape, Kapton tape in the semiconductor industry, heat-resistant tape and 2 mil thick polyimide film, as well as ordinary transparent tape, packaging tape, tape for manual accounting, etc. Permitted Width and Inner Diameter of Tape: The total width of the tape must not exceed 1.95 inches. The 1\" and 3\" cores have the same length of 2 inches, and the core of the side film holder is also 3\". The maximum thickness of the tape can be 0.82\". The thickness of the film inside and outside the film holder is 0.7\". Packaging: Our packaging includes a dispenser with 1\" and 3\" cores. The package comes with instructions. Please read carefully before use (tape not included).