Manfrotto 190XPROB brand_Nissin Mamiya Auto-Ext Ring Set is

Mamiya Auto-Ext Ring Set is a complete set of three manual focus extension tubes for the Mamiya 645 camera

The Olympus XA isn't exactly an unknown quantity

and the shutter works well

This case includes foam liners for lid and base

Manfrotto 190XPROB brand_Nissin Mamiya Auto-Ext Ring Set isThe 190XPROB is an updated version of the classic all metal compact tripod from Manfrotto, with easy to use flip locks. This XPROB version features a centre column that can be flipped horizontally (for close up or copystand use) without removing it from the tripod. Extends to about 5 feet without centre column. Accepts any head with a standard 3 8" thread. In good cosmetic condition, with some paint and finish wear.