Kolberg 119R, Twin adjusting ring for the connection of round tubes Ø 16 and Ø 20 mm; 1st surface: insert holes Ø 16/20 mm; 2nd surface: insert holes Ø 20/16 mm; for the connection of e.g.: 2 main tubes Ø 20 mm (90° offset); 2 insert tubes Ø 16 mm...
Thomann Italia