• Chrome vanadium steel / Carbon steel available
• Superior rust resistance surface
| Part No | Size | L(mm) | Inner | Outer |
| 1255 | 8mm | 140 | 10 | 60 |
| 1256 | 9mm | 150 | 10 | 60 |
| 1257 | 10mm | 160 | 10 | 60 |
| 1258 | 11mm | 165 | 10 | 60 |
| 1259 | 12mm | 170 | 10 | 60 |
| 1260 | 13mm | 180 | 10 | 60 |
| 1261 | 14mm | 190 | 6 | 60 |
| 1262 | 15mm | 200 | 6 | 60 |
| 1263 | 16mm | 210 | 6 | 60 |
| 1264 | 17mm | 230 | 6 | 60 |
| 1265 | 18mm | 240 | 6 | 60 |
| 1266 | 19mm | 250 | 6 | 60 |
| 1267 | 5/16" | 150 | 60 | 60 |
| 1268 | 3/8" | 170 | 60 | 60 |
| 1269 | 1/16" | 175 | 60 | 60 |
| 1270 | 1/2" | 190 | 60 | 60 |
| 1271 | 9/16" | 200 | 60 | 60 |
| 1272 | 5/8" | 220 | 60 | 60 |
| 1273 | 11/16" | 240 | 60 | 60 |
| 1274 | 3/4" | 260 | 60 | 60 |