Steel arm can be hooked up to a cable or air cylinder and moves approx. forty five degree from open to close. Alum. spool is spring loaded and will return to open position if there is no resistance against it. Spool appears to have a .300" hole thru the center.
Note: This is a used item. This item might have been taken in on a trade. RBS may have inspected this item and deemed re-usable. There is no warranty expressed or implied with this item.