By Huu Khanh Nguyen · Updated October 28, 2026 · speed-rail, tube-fitting, flange, sloped-flange
A cast square base plate whose socket can lean a little from the vertical, so an upright can stand on a slope.
| Name | Default | Unit |
|---|---|---|
| Tube outside diameter | 48.3 | mm |
| Angle from the vertical | 9 | ° |
| Socket bore | [49].at([48.3].indexOf(tubeDiameter)) | mm |
| Finish | white |