HYDRO WING Extension Joint Mast Total Length: Approximately 57cm Length without joint: Approximately 48cm Thickness: Approximately 4.5cm I found this while organizing, so I don't know the details, but it's generally in good condition. Thank you. HYDRO WING mast for windsurfing, with adjustable holes for improved performance. - Model Name: HYDRO WING - Features: Mast for windsurfing - Included Items: Mast base - Adjustable Holes: Multiple adjustment holes Thank you for looking.