Natural wood, cannon-shaped vise Total length: 250mm Height: 150mm Insertion diameter: 13mm Baseboard mounting width: 50mm Comes with a storage bag Material is unknown, but it's a somewhat large vise. It has good holding power, so it can also be used for long rod holders. With its unique design, it expands your options when used in conjunction with regular items. I used this with a bamboo rod holder and bamboo rod for a relaxing fishing experience. Are you interested in this?