(1) One extra wide silicone rib/spine
They come in different sizes
8.5mm x 15mm x 74mm
9.5mm x 19mm x 82mm
10.5mm x 21mm x 90mm
11.5mm x 23mm x 99mm
12.5mm x 25mm x 108mm
(1) One extra wide silicone rib/spine
They come in different sizes
8.5mm x 15mm x 74mm
9.5mm x 19mm x 82mm
10.5mm x 21mm x 90mm
11.5mm x 23mm x 99mm
12.5mm x 25mm x 108mm