High quality rugged Heavy-duty marine grade cast aluminium base with 6 x 8mm mounting holes.
- Friction clamping top with slide and swivel. Moulded nylon cup insert provides a smooth swivel performance.
- Highly polished aluminium finish. Powder coated aluminium swivel.
- Cushion of air smooths out bumps while travelling over waves.
- Gas assisted adjustable height.
- Takes a standard 72.6mm (2-7/8") diameter seat slide/swivel.
- Extra large 305mm base.
- 360° rotation. Welded base.