Tensioning Rods for attaching the screen material to the screen. These rods slide into the edge of a screen material and are then used to stretch the material from those edges. 

NOTE: Some rods only one rubber end. This is intentional so the rod can easily overlap inside the pocketed edge of the screen. 

Instructional Videos:

For STR (regular frame) fixed frame: 

For STT (thin bezel) fixed frame: