Hot glue sticks are cylindrical rods made of thermoplastic adhesive that are used in conjunction with a hot glue gun. When heated, they melt and can be applied to various surfaces, creating a strong bond as they cool and solidify. They are commonly used in crafts, repairs, and DIY projects. These glue sticks come in different sizes and colors, allowing for versatility in applications. They can bond materials like wood, fabric, plastic, and metal. Hot glue is favored for its quick setting time and ease of use, making it a popular choice for both professionals and hobbyists.