2-3/8" diameter. Anodized aluminum. Anti-rotation locking pins. Height is measured from deck to top of seat mount.
| Brand | Swivl-Eze |
| Height | 11" , 11" , 11" , 11" |
| Finish | Anodized , Anodized , Anodized , Anodized |
| ABYC | AO , AO , AO , AO |
| Pkg. | Bulk , Bulk , Bulk , Bulk |