With an impressive interior width of 14 inches, Tie Down Engineering's Internal Pile Holder is suitable for use with pilings up to 13-1/2 inches in diameter, ensuring a snug and reliable fit. Equipped with four durable 6-inch rubber dock rollers, this innovative design allows for boat dock movement, making it ideal for tidal areas or locations with fluctuating water levels. The overall dimensions of this robust and dependable part are 24 inches x 24 inches x 7-15/16 inches, providing ample space and stability for your boat docking needs. Tie Down Engineering's Internal Pile Holder delivers exceptional performance, easy installation, and versatile functionality, making it an essential component for creating a reliable and adaptable dock system.