The package includes two bicycle rod holders. Size: Top opening diameter: 1.8-3.5 cm; Bottom opening diameter: 2-3.5 cm. With this fishing rod holder, you won't have to pick up your rod from the ground. You can keep it within easy reach, even while standing. Enjoy having your fishing rods always at hand. Made of durable plastic, the integrated non-slip rubber seal secures the rod and prevents abrasion. Its strong grip keeps the rod in place. It fits most fishing rods of different shapes and sizes. IMPROVEMENT: The fishing rod holder attaches securely to your rod holder and remains stable. It also features a 360-degree rotation function, allowing you to rotate it in any direction. This fishing rod holder makes an excellent gift for Father's Day, Mother's Day, and birthdays.