Standard Closed Feet Specifications
| Gun Type | Stud Size | Part No. |
| Pro-Weld INT. | 1/8 – 1/2 | B-1N |
| Nelson NS-20 | 1/8 – 1/2 | B-1N |
| Nelson NS-30 | 1/8 – 1/2 | B-6N |
| Pro-Weld INT. | 5/8 – 3/4 | B-2N |
| Nelson NS-20 | 5/8 – 3/4 | B-2N |
| Nelson NS-30 | 5/8 – 3/4 | B-7N |
| Pro-Weld INT. | 7/8 – 1″ | B-3N |
| Nelson NS-20 | 7/8 – 1″ | B-3N |
| Bantam A-58 | 1/8 – 1/2 | B-4N |
| Bantam A-58 | 5/8 – 3/4 | B-5N |
| Pro-Weld INT. | 1/8 – 3/8 | 028-833 |
