Steel-Craft Extension Springs
| CODE | DESCRIPTION |
| SPRE087 | For 8×7 Res. Steel |
| SPRE097 | For 9×7 Res. Steel |
| SPRE098 | For 9×8 Res. Steel |
| SPRE107 | For 10×7 Res. Steel |
| SPRE108 | For 10×8 Res. Steel |
| SPRE167 | For 16×7 Res. Steel |
| SPREW097 | For 9×7 WOOD |
| SPREIPC097 | For 9×7 1 Piece Steel |
| SPRE1p6 167 | For 16×7 1 Piece Steel |