Ermes Kit Roller double

Kit double roller base is composed as follows: 2 pairs of pulleys 16 x 28 Sliding 16 mm; 2 axes 6 x 82 with 4 screws 1 stopper tube 170 with 5 screws 1 pair bank  wavelengths with 4 screws 1 guide-line transformer Ceramic configuration: Pulley with Ceramic bearings 6 x 15 x 5;