Adapter 26/34 and 20/27 GARDENA 105-20, changes from 33.3 mm internal thread (G1) to 26.5 mm external thread (G3/4). Advantages : 100% compatible with the GARDENA Piping Range Allows easy connection of submersible pumps with female thread to the connection system Features : Thread: 2.5 mm (G 3/4")/ 33.3 mm (G 1") Reference : 5305-20 Packaging : 1x Adapter Warranty : 25 years warranty