| Product Variations | |
|---|---|
| No. AL-400-28 | Aluminum housing, no holes. |
| No. 400-28 | Carbon steel housing, zinc plated, no holes. |
| No. AL3-400-28 | Aluminum housing with .29 dia holes. |
| No. 3-400-28 | Carbon steel housing, zinc plated with .29 dia holes. |
| No. AL3-400-53U | Assemby: aluminum with holes, and nut. |