It NO. | A (in) | B (in) | C (in) | D (in) | Swing dia (in) |
550-111 | 2-1 / 2 | 3-7 / 8 | 2-1 / 4 | 9/16 | 12 |
550-222 | 3 | 4-5 / 8 | 2-3 / 4 | 5/8 | 10-15 |
550-333 | 3-3 / 8 | 5-1 / 8 | 3 | 3/4 | 13-18 |
550-444 | 4 | 6-1 / 4 | 3-5 / 8 | 7/8 | 14-20 |