3-1 MEANS IT CAN BE USED HALFWAY DOWN FOR WIDE-ANGLE LENSES
AND ALL THE OUT FOR NORMAL TO TELEPHOTO LENSES
PUSH IT ALL THE WAY DOWN FOR STORAGE.
THESE UNITS ARE BRAND NEW.
WE SHIP IN 1 BUSINESS DAY and we package professionally. We are interested in BUYING your photographic equipment as well. We are Camera Exchange located in Waterford, Michigan.