the Ermes Double roller kit includes: 2 pairs of pulleys 16 x 28 Sliding groove 19 width 14 or 16 mm; 2 x 82 6 axes with 4 screws M4 x 6 1 stopper tube 170 with 3 screws self-tapp. 2.9 x 13 1 pair long wave shores with 4 screws self-tapp. round head 3.5 x 13 1 scroll-line transformer Glass configuration : 2 pulleys with Glass bearings 6 x 19 x 6