Tape guns are tools used for dispensing and applying adhesive tape. They come in different sizes to accommodate various widths of tape rolls. Here are the common sizes of tape guns:

1. 2″: Tape guns designed for 2-inch wide tape rolls. These are typically used for standard packaging tape and are suitable for sealing boxes and packages of various sizes.
2. 3″: Tape guns designed for 3-inch wide tape rolls. These are often used for larger or heavier packages where a wider tape is needed to provide extra strength and security.

The size of the tape gun corresponds to the width of the tape it can accommodate, ensuring compatibility between the gun and the tape rolls. Users can choose the appropriate size of tape gun based on their specific packaging needs and the type of tape they plan to use.