MFJ-1918EX Ham Radio Antenna Tuner & Ham Guides TM Pocket Reference Card Bundle - Perfect for Amateur Radio Operators, Field Operations, and Emergency Communications

My second time using this product the threads pulled out of the thumb screw which tightens against pole to hold legs in position. I was in the field at a field day and could not repair. Very disappointed with MFJ on this one.The image of this product clearly shows more than two extensions in the telescoping pole. What I received only has two telescoping sections.