acoording to Claisen with Liebig cooler and vacuum-tip, curved

                                             coating length in mm                  SGJ male ground

20.636.20                      200                                                    2 x 14

20.636.30                      300                                                    2 x 14

20.640.30                      300                                                    2 x 14 + 2 x 29

20.640.40                      400                                                    2 x 14 + 2 x 29

Qty=1