Automatic extension tube, 45mm size, for Mamiya RB67. - Model Name: Auto Extension Tube No.1 - Compatibility: Mamiya RB67 - Size: 45 mm - Features: Automatic function - The appearance is clean with no noticeable scratches. Please purchase only if you understand the condition as this is a used item. *Regarding price negotiations: We cannot offer any further discounts. Operation has been confirmed with a simple test by an amateur. To prevent any problems, returns and refunds after shipping are not accepted. Please consider purchasing after understanding the above information. Thank you for viewing.