The Gutter Guard - Wedge Eliminates Downspout Pipe Clogs from Leaves and Debris - 2-Pack

What are the dimensions of the assembled product? I have 5 inch gutter but the opening at the top of my gutter is only 4 1/4 inches.

Will these work on 6" gutters?

Does it stop pine needles from clogging the gutters and downspouts?

Will these work for 6 inch gutters. Let me know. Thanks