I love the new threaded motor retainers from Estes. The one important possibility is the ability to recess this in to the rear of airframes, as would be desired for scale subjects.
This tool is to be used only for Estes retainer cap for 24mm motors. It is only useful with recessed mounts of a maximum 1 inch depth from the aft end of the airframe tube. Minimum width allowed for wrench clearance is the inside diameter of BT-60 tube or 1.595 inches, or greater. Can work with BT-60 fin units in my shop where applicable. I hope you guys like it!