Internal thread 1.3 cm (0.51 inch) M13 x 1
| Material: | copper |
| Colour: | gold |
| Outer Diameter (cm): | 3.0 (1.18 inch) |
| Diameter of opening (cm): | 1.3 (0.51 inch) M13 |
Cross pipe / rod coupling connection in brass.
The internal thread: 1.3 cm / 0.51 inch (M13x1 finethread)
You can use the ball to connect 4 tubes in a cross shape.
